Are we all really just selfish?

I've been thinking about wanting kids for a while now, and I can't help but wonder: "Is this something my child would want, or is it something I want rather?"

And while they're wrong about almost everything, antinatalists are right about this one thing. A person who does not exist cannot possibly want to come into existence. It almost feels like I'm imposing my own will onto my own future child.

Does anyone else have these thoughts?