Gaming. I’m in my 30s and the 30s was the age bracket I’ve heard where few can carry on gaming through, because it has a tendency to die here. I piss away so much time doing other things that gaming just takes a backseat. I’m not even married or have kids.
Tinkering with electronics, it was easy when we had through-holes and young eyes, now with SMD and presbyopia it is pretty hard.