The thing though is that I want a peer. I want someone with a similar outlook on life who I can muddle through life with. The people you describe all sound like fascinating characters, but they're not peers.
I'm 33, and I don't even see people my age as peers. I'm still a big kid at heart, and when I see people my age who are getting married, having kids, climbing the career ladder, it just reinforces that people my age just aren't my peers. I have no interest in ever getting married or having kids, and I have no career ambition. I identify more with people who are a decade younger than me than anyone else. Most people I've seen who are my age come off as more peers to my parents than as peers to me (this was especially jarring the last time I visited my cousins; they're only a few years older than me, but they have three kids each now, they reminded me so much of my mom, while I still see myself as an overgrown kid... by the time their children are old enough to have conversations with I'll probably have more in common with them than with any family members of my generation).
I'm a child-free man. My best friend of 12 years is a mother of 2, and 10 years older than me. We're extremely similar people, with extremely similar interests. We just have completely different daily lives. I'd really struggle to think of her as not a peer. But my identification goes in the opposite direction - I identify more more older people. So it's possible you could find peers among 20-somethings?
For the record, it's not that I see _every_ person who has kids as "not a peer", just most of them. The few I do see as peers are by and large the people who had kids by accident and didn't spend their whole lives dreaming of being a parent.
I'm 33, and I don't even see people my age as peers. I'm still a big kid at heart, and when I see people my age who are getting married, having kids, climbing the career ladder, it just reinforces that people my age just aren't my peers. I have no interest in ever getting married or having kids, and I have no career ambition. I identify more with people who are a decade younger than me than anyone else. Most people I've seen who are my age come off as more peers to my parents than as peers to me (this was especially jarring the last time I visited my cousins; they're only a few years older than me, but they have three kids each now, they reminded me so much of my mom, while I still see myself as an overgrown kid... by the time their children are old enough to have conversations with I'll probably have more in common with them than with any family members of my generation).