1) This is entertainment. If someone is more entertained/happier booing so be it. 2) Being a fan does not mean that you unconditionally support the actions of a team. Rather, it means that you like a team and want the best for it. If a player/coach/GM/owner is doing something that isn't good for the team, communicating disapproval in the form of booing does not make you any less of a fan of the team. 3) Don't want booing, then lower the price of a ticket! The simple truth in life is that when you pay more for something, you expect better. For example, if you buy a car for $100 and it drives, some of the speakers work, and sometimes has A/C then you will be thrilled! But, you would "boo" the crap out of the same car if you had to pay $100k.