When we witness the birth of new sports like chess boxing and toe wrestling, we should remember that just because something hasn't caught on yet, it doesn't mean that it isn't going to get big sometime in the future.
On that note, when you hear about a bunch of players running around a field with broomsticks between their legs as they try to pass 'quaffles' through hoops, don't be judgmental. Quidditch is a perfectly valid sport.