You aren't too old. I've been out of school for ~10 years and AI makes me feel exactly the way you've described it. I'm trying to navigate it and find an exciting space to carve out for myself, but the future feels unclear in a way it never has before. I'm confident in my own ability to build great things, but to your many points, AI has the unique potential to do everything better than me.

I don't want to say this makes me feel hopeless, because it genuinely doesn't. I'm working on a new startup, I'm starting a family, and I'm doing well.

I just want to build things that matter, that people find useful, and I've been having a hard time figuring out how I'll do that in a world with sufficiently advanced AI. Hobbies have never been enough for me, and never will be. It needs to be more than fun to energize me - I need to feel like I'm moving a needle.

For now, all I know is that I don't know. It feels nearly impossible to guess what the future holds.