I haven't really had friends with common interests since perhaps high school if not elementary school. When I was in high school I got my best friend into heavier forms of metal than "teh nu" and we went to shows in addition to just being dude bros. We've lived in different states now for years and I have a family so we don't see each other much. Other than that, I've never had a friend since childhood that I share any common interests with. I met tons of people in college that are almost all just Facebook acquaintances now because that stuff was shallow for the most part. Part of the problem is that my interests are a little obscure, but I can't even find non-internet people to have substantive conservations with about things like history. For the most part I'm content to just hang out with my wife and kids, but every once in awhile I think it would be nice to have a male friend to talk metal, religion, history, etc. with.