What I want to play is also something that can win, so it works out for me
Some people have fun winning, so they play the same list with the same partner, it's all about whose view you're looking at it from. I mean if I do well with my partner I'll tweak our lists a little to make them better then play with them again next time. True, everyone has different motivations. I want to win and have fun.
Unless my opponent is a dick first I won't be one.