I understand what you're trying to say here.
Maybe I'm using a different definition for the word friend. The activities you describe are what I would associate with a close friend, someone you trust and want to hang out with.
I guess what I'm trying to say is that there are plenty of people at work, sports, etc. with whom you get along well with and they would probably enjoy more interaction on a friend(ish) basis. Doesn't mean you have to hang out or become close friends. Just that the tightening of bonds with the people in our surroundings should be easier than it really is.
I have a few coworkers with whom I share my enthusiasms, gripe about shared annoyances, go out for lunch and sometimes dinners. They're not really close friends, and I never really do anything with them outside of work, but I still consider them friends.
Does that make sense? Maybe I'm just rambling.