Hiking IS a group activity. There's countless hiking clubs on Meetup.com. They frequently seem to serve as singles mixers in fact. Music is also a group acti

Hiking IS a group activity. There's countless hiking clubs on Meetup.com. They frequently seem to serve as singles mixers in fact. Music is also a group activity. Have you never heard of a "band" (or "garage band")? There's also cooking clubs on Meetup.com. What exactly is your idea of a hobby that involves other people?