I'm good friends with many of my former coworkers from the office (boring FAANG 9-5 job, not a startup). It's easy to chat, make lunch plans, go drinking, etc w

I'm good friends with many of my former coworkers from the office (boring FAANG 9-5 job, not a startup). It's easy to chat, make lunch plans, go drinking, etc when you're all working together in the same space. Having said that, we were all in our 20s and early 30s, so I think you're onto something. There are plenty of young people around to hang out with, but not so many middle aged ones.