Yeah, I don't think the age disparity is talked about enough. Admitedly I'm in this weird "youngest millenial" bracket where, growing up, I was always much older than my parent's friend's kids. But even in general with young adult life: once you leave college, everyone around you feels "older".

There's maybe 1-2 other people around your age at work, unless you actively chose the massive internship to employment pipeline of MAANG, Big 4, or your industry equivalent that was still actively training employees. Not really for me; my first gig was pretty young, but going to a large corporation for much higher pay: it was a satellite office with 2-3 other people my age than a bunch of seasoned veterans.

Neighborhoods are the same way too. Even today, I can make small talk with my neighbors. But they are some 15+ years ahead of life with two young kids. Different vibe from a single dude in his 30's.