To "hate" an athlete for anything sports-related is ridiculous, I'll agree with Hutch on that. That said, it's extremely annoying to see Brett Favre have this outrageous narcissism. Alot of people love on Brett Favre because they act like he has this unbridled love of the sport and is like a little kid, just flinging the ball around having fun, but these last couple of years we've grown to see his true motivation for EVERYTHING he does (retiring, un-retiring, changing teams, retiring again simply to get released, signing in division so he can play the Packers twice this year, fake-staying retired then having the coach pick him up at the airport personally) is egotism and childish petty-ness. And those traits are what makes me pretty "ugh" about the guy.
Then again, I'm a little biased perhaps because I always thought he was a bit over-rated. A HoF QB? Obviously. One of the top 5-8 QBs of all-time? LOL, no.