Not straight, and not a man, but I just think they're neat! There really doesn't need to be a "why" to attraction, sometimes your brain just sees something and goes "yes"

Life is hard and boobs are soft.

Gay woman

Small ones are cute and bite sized, big ones are squishy pillows. Regardless of size, they're all soft and cute.

Everybody likes boobs. They are the first positive thing we are introduced to in life.

The inprint is strong.

at the beginning there was only ass. when humans still walked in 4 legs, the sexual thing they saw in front was ass cheeks. then humans went and started to walk on 2 legs. humans evolved and developed basically boobs so they were at eye level and attract the males.

boobs are the cheap version of ass.

I think there's a similar attraction to all erogenous areas, but due to cultural reasons breasts are ones that are always covered and their uncovering signals intimacy.

Favoring big breasts is mostly a cultural thing with some links to biological instincts that I wouldn't give much weight to.

"Jiggling" transfers information about their structure and your brain can create a model on their "feel" without touching.

Humans are the only mammals with boobs that stay "inflated" without childbirth or breastfeeding involved.

The theory is that it's an evolutionary selection, and the hypothesis is it's an aesthetic choice that keeps reinforcing itself (a positive feedback loop) and now it's HotWired in our brains.

The way i personally see it though, just like how i like certain types of food without a proper explanation to why, i also like boobs.

There's also the idea it's connected to being breastfed as a baby which brings back all those warm and safety feelings with them. That doesn't explain why most women (I speculate) aren't as into boobs as the average guy. That said, I've met multiple women, some straight,who also found boobs very fascinating. So maybe they get the same warm and safety feelings minus the sexual attraction?

Cuz boobs

I don't know, probably for the same reason others like other things. Chemical reactions, probably?

It can't be explained directly, by itself. They're part of a bigger picture.

Straight men are attracted to women on the whole - legs, arms, waist, face, chest, back, it's all good. Whatever force it is that makes us attracted to women, it's not something that we chose or decided. We just do.

Since boobs are a sign of femininity, they're attractive to us on exactly that level! They fit into our idea of what women look like.

All three of those things. On a subconscious primal level though it means nutrition for babies

I'm not seeing a lot of mentions of nipples here. So for me, size is pretty much secondary. Nice, prominent nipples are sure to get my attention, though.

The biological hypothesis is that they look like an ass on your chest. Asses are visually arousing for males for what I hope are obvious reasons.

Just something compelling about them. All shapes and sizes

Our dumb monkey brains just like them. It's all of those things you mentioned.

Boobies make good pillows.

Firmware. It's not a logical rational decision. Years of evolution I guess? There is embedded code in our brains that see tatas and we go ape.

Boobs look like they're drops of water, just about to drip. So there's a certain anticipation there. Our brains are wired to predict where action and movement is going to be.

All of that. It makes a mesmerizing movement that I would just like to keep looking at.

Because of biological programming. Humans are the only mammals with females that have permanent boobyliciously boobing boobies, so as per evolution it is no surprise that human males are going boinks for them. Size, shape, motion, who they be on are the mutual factors for any attractive body part, quite so also for boobs. They are cute when tight and jiggly, pretty when bouncy and cozy to feel up regardless of size, neat to catch a stolen glimpse and satisfactory to blblblblbl.

I don't know what kind of shocking reveal you expect.

Why do you like chocolate?

Coffee?

Ice cream?

Brussels Sprouts?

Probably some form of Fisherian runaway over the course of human evolution tbh.

because they are the soft warm and sweet examples of life

All of what you said. Something about them makes them ace to look at.

Plus, boobs are boobs…big, small, saggy, perky, real, fake. As man’s reaction when a woman takes her top off is a good way to judge him….

Shape mostly, but also texture, softness, and smell.

I try to avoid paying them any attention unless someone wants me to look at or touch them thanks to the implication. Most of the time it's just a place where I shouldn't look, so it gets a little awkward in my head when someone has on a graphic tee that I want to read or look at.

Something to work around most of the time, but then can make a partner happy when they are appreciated as themselves when vulnerable enough to bare that much, which adds a little special dynamic that gets the brain chemicals doing their thing.

All creatures, including humans, possess instinctual knowledge. This is stuff we are born with. For instance: fear of snakes, or estinating how much protein is in our food by taste. Some of our instinctual knowledge is about mate selection since procreation is a very important goal for a species. We use our nose to detect if others are a good immune system match, and we use our eyes to see if they are sick or unhealthy and also assess their ability to nurture children. That last part is where the boobs come in. They make breast milk and so they are a feature that gives pleasure to see. There is no choice about it. We like what we like because of our genetic programming.

Given that large areas of the world do not see breasts as sexual, it's hard to avoid the conclusion that breasts are erogenous because our society has said that they are, rather than any innate characteristic.

When I lived in Africa, women and girls had no problem exposing their breasts, but would go to great length to keep their thighs covered.

Mom, milk, life, love

Obviously there is no one easy explanation here (as you can see by all the different responses).

I think evolutionary factors play into a general affection people have for boobs. They are humans first source of food and with it an extremely intimate contact. Also on a "birth readiness" perspective Boobs on a woman suggest that she can feed a child (just as wide hips suggest she can bear one).

There is something to be said about culture. Since boobs are considered "sexual" they have to be covered in "decent" settings (see also discussions about female presenting nipples on social media) which simply adds to their sexualization.

Also, in my sexual experience (Bi male) nipples and breasts (boobs/man boobs ...) are erogenous zones so playing with them (touching/pinching/kissing/biting...) actually is arousing thus they are "sexual" parts.

Thats just my two cents.

I think it just goes back to two main things. Being breast fed as a child, you grow to depend and love on the boob, so it's kind of baked into our genetics to some degree. Secondly the Church basically sexualized boobs and are considered taboo private parts most people aren't supposed to see so that gives it some sort of allure that you're seeing something your not supposed to, which in American culture is pretty much the norm. Think of how ankles were such a thing to flaunt not that long ago at all. Some cultures just outright don't care about boobs and just let em hang out so I really just feel like it boils down to culture for most of it.

Past all of that, and personally, a nicely resting boob is just a great sight. Something about the curves and seeing the body in its natural form idk. Also, squishy, they're great to just have a hand on and give a good squish every now and then.