I fight for privacy to protect myself.

Now, what am I protecting myself from? I don't think anyone is going to come arrest me for what I do. I don't think any big companies are going to leak my data and embarrass me. I don't think anyone is going to compromise my bank and drain my funds.

I am protecting myself from being influenced by advertising and targeted news.

I am protecting my thoughts and feelings, because in the end, that's all that really matters. I don't want to need the next toy, or jump on a bandwagon. I don't want to see advertising and I don't want a carefully crafted worldview pushed on me.

Do what you can and dont let perfect be the enemy of good. You're still ahead of the rest of the crowd who don't give a shit.

As for the USA, let me put it this way: If Trump gets elected, with the tech tools the govt has, we will see, at the very best, another Hong Kong, with anyone that disfavors the Repubs disappearing, some permanently. At the worst, we will see another Nazi Germany. He himself proposed executing people.

If you practice privacy and can teach others, your skills will be valuable to the underground resistance.

It's a lot of work, and at the end of the day you might just end up leaving a you-shaped hole in the data. Privacy is a great thing to be mindful of as part of a larger understanding of modern media literacy, but it's not all you should be about. Preach it when contextually appropriate, find a level you're able to live with, and keep growing

Privacy doesn't need any justification to why it's important any more than why someone molesting you on the street doesn't need a detailed explanation as to why it's bad. Corporations and states are dirty abusers that want to know about and sell every part of your private life, and that should make you uncomfortable. Having to justify why you deserve privacy in the face of this form of abuse is simply victim blaming.

Pretty much all your worries can be fought with activism. Efficient activism will make you a target for law enforcement.

But it’s getting so hard nowadays, and there are so many more important problems – global warming, AI, the inevitable collapse of the current world order… how does privacy improve the world? Please help remind me.

Privacy as a cause is something that helps support other forms of activism. We live in a world in which hostile state actors routinely surveil activists in order to more effectively divide, subvert, marginalize, and intimidate them; privacy is important counterplay against this. It's like saying that you're not going to eat healthy because exercising is more important; one facilitates the other.

For people to try and effectively respond to those issues they must be able to communicate privately with no fear of retribution.

It also requires private and secure communications to be a normal thing and not an indicator that the parties involved are criminals, terrorists or pedos.

Ai by the way is going to be just a little fart compared to the other issues you described as well as the lack of privacy.

Also a problem related to privacy is our growing dependence on private corps to be a 'normal' person ("why you don't have a Facebook/Google/Amazon/etc account ?")

Privacy is a shield. It is useful to protect against a threat. It doesn't have to perfectly protect against the threat. But the important thing is to have a threat model and construct your privacy concerns around it.

Ask yourself what you believe will be a threat to you and then criticize those beliefs. Use this self-critical process to decide on your first idea of a threat model.

In this world the companies are willing always more money and the govs more power. Since the beginning of the Humans we speak and we discuss physically, and the capitalism couldn't ever remove that to people. But now there is a new way of communication that everyone can use, the usage of internet. And the companies really understand that so they went fast to go before the people and catch this new technology to deceive the people on the real use case and way of using it. Today the way of distance communicating is mostly in the hands of big techs, so as I seen here, privacy is a shield and it shouldn't be perfect but is to protect you from big techs. The privacy is not going to resolve some of the most important problems in the world, but in the world we leave if we do nothing to counter these acts it would be even worst. So privacy is a shield to protect the population from the future consequences of capitalism.

AI, the inevitable collapse of the current world order...

To me these problems are giving motivation to fight for my privacy, because I think that if I don't, these problems will bite me harder in one way or another, or multiple.

But it's getting so hard nowadays

What obstacles have you found? Maybe we can give some guidance. In my experience there are plenty of privacy tools that are easy to use. For youtube there's piped and invidious, for always selecting a working instance farside (I think that's the name) can help.
For email and cloud storage there's proton, bitwarden for passwords. uBlock Origin against online threats and annoyances. If you want to use an AI chatbot, DuckDuckGo has a privacy proxy frontend for chatgpt, claude and 2 others. And plenty more.

Privacy means personal agency and freedom from people, whether individuals, companies, or the government, controlling you with direct or implied threats, or more subtle manipulation, which they can do because they have your dox and because information is power.

A lack of privacy adds fuel to the polycrisis because if we can't act in relative secrecy that basically means we can't act freely at all, and nothing can challenge whoever runs the panopticon.

You don't have to be the most private, just don't draw the most attention....

Big data is an unfortunate cost of society.