You mean there are people who aren't fans of Mario Party? BLASPHEMY!
It's more like I'm a fan of Mario games in general; one of my game-collecting goals is to own every Mario game. I'm actually sort of working my way backwards through the Mario Party series, as I own 3, 7, and 8. However, most people I know won't play games on older systems (because they're worthless or some such nonsense), so I'm gonna need a Mario Party 9 to have another chance at multiplayer mayhem.