I’m 37 and as such doesn’t qualify as old, but I recently got into the Blood Bowl hobby. I haven’t done miniatures since I was a little kid, but some of my real world friends picked it up and I was quick to jump on the wagon as I had been looking for a non-digital hobby.
Anyway, being 37 my purchasing power is obviously a lot greater than it was the last time I was into miniatures, and that has lead me down a rabbit hole of hobbyists who enjoy miniature war/board games (not really sure what to call them yet). A lot of these people are well into their 60ies, yet they attend weekly brawls at local libraries. They hold weekend tournaments. Have lively Facebook groups to organise their different leagues and everyone is welcome.
It’s really been inspiring to see that old age can be a lot different than what it’s been for my own family members.