I have an interest in systems programming. I've been on a run of enjoying esp32 iot home automation projects, I enjoy interfacing hardware with software. I enjoy restoring early hardware.
There's a challenge there to socially meetup and connect to develop work, a career, or just exchange information.
Social friendships might come out of such pursuits.
(FWiW I'm in W.Australia, > 60, and had an interest in version 0.0 Linux when I was porting Minux to a transputer array and eating popcorn when Tannenbaum and Torvalds were back and forthing on UseNet)