@izzythepush,
Sometimes I've been strongly for my home team (ucla basketball/Wooden years) and rather hated my home team (LA Rams, u.s. football, long ago). Still, there is community going on for a lot of sports fans everywhere on earth. But I know a bunch of people alienated from team sports for various reasons, like I know people alienated from much group stuff, either in general or specifically, other than sports.
Which brings up that now that it's cold, I've been wearing my Juventus scarf. Fbaezer warned me about Juventus somewhere on a2k. So... team antipathy can also be a connector for people from all over the world.