The vast majority of pro athletes are douches. You probably would be too if everyone always sucked your dick about how great you were and gave you all kinds of free shit.
Yeah kinda have to disagree big time on that too. I spent 6 years playing pro bball and almost all of the guys i've met from the all different countries i've played in are not douches or full of themselves.
I can see though how many can come across this way through media and whatnot. What i also think hurts reps is when they cant go out in public without getting mobbed so they can probably come off as standoffish then.
Just my 2c
my names's Petey and i have gigantic balls