That is the definition of unbridled selfishness, bordering on sociopathy.

If this is truly what you think and drives how you behave then you are a leech on everyone else that will follow in your footsteps.

I won't have children either, but I still want the world to be better for them, and I do the best within my means to make that happen.

People like you, when they're competent, are the ones that rise to the top of the corporate ladder and own businesses that expound the worst parts of capitalistic society. Greed, selfishness, disdain for the plight of others, no thought for consequences as long as they don't affect you personally.

So, don't care if you don't want to. But internalize that you're a POS if that's actually how you feel.