@Alt_Human between being part of something bigger and just knowing you have something in common with a bunch of people (and that can translate to anything). None of that seems to matter if you're not team oriented though. Never considered myself particular on team or solo.
They torture us & we keep coming back. Relationship could be a tad abusive as well. I think it depends on the team. One could argue yankee fans have a much healthier relationship with their team because on occasion, they win.