Some people have little interest in those things. You've also really only listed solitary activities. Sure you can do some of these things "with people", but it's a far cry from more social activities.

To answer your first question: a lot. There's people that are very different from you, that really don't do well without these interactions. They expect to go out 1-3 times a week or at least monthly. Small area community events can be awkward if you aren't from town, don't know everyone, who all grew up together.

Yeah, you're buddy might come over now and then for target practice. However this is very different from social events city dwellers rely on.