Ooh goody, people who don't like football, happy days!
I have been to one or two in my time, I remember going to watch Swansea play at The Vetch (their old ground) which shows how long ago that was, went with some uni friends so it was more a social thing. Can't remember any others, so it either didn't happen again or I have locked away the memory. Seen too many matches on TV, although that was for vastly different reasons that would take forever to explain!
It's not my thing at all, and quite frankly I suspect most people only go to the matches or whatever to have an excuse to get drunk. Poor souls, nothing better to do with their existences other than to get drunk and act like idiots. While wearing their football team shirts with bellies bigger than the goal at either end of the field!
Which leads me onto what I'd ban if I had the power:
Alcohol consumption at sports events. Whether this is athletics, swimming, football, whatever it is, the consumption of alcohol would be banned. No sale of it on the grounds, and bags checked for alcohol on the way in.