Well, yeah. It's very easy to play the game in a normal, fair way and not get banned. But the sad truth of the matter is, that some people are just assholes.
And for less than a dollar a day, you can help these assholes claw their way out of the squalor and pestilence they live in. Just send your money to "Asshole Aid", and for the low price of 47 cents per day you can send these assholes to school, provide food for their families, and you will receive a letter from your sponsored asshole every month.
Or we can just ban 'em and be done with it. Cheaper.