Flexor the Mighty!
18/100 Strength!
It's not an ego thing - I don't always have to be playing the biggest and baddest, though I've known players whose ego won't allow them to play anything less. I try to avoid these.
I have a player that uses RPG's as a power trip to make up for the face that his life is such a mess, so of course he gets emotional when things don't go his way, via dice or his own stupid decisions. Its funny he's the one that gets upset if his PC isn't stacked yet scoffs at point buy. But he'll want to roll up 43 sets of stats until he gets the one he wants. I'd tell him to take it elsewhere but he's my brother and I have to deal with him.
I think part of the reason I like rolling is I have never approached D&D with a story to tell and character in mind. I may think maybe a Fighter but then I roll my stats and just go from there. I never have a story since I'm not the type to do that, any story will come out through play at the table. And my story is more likely to be about a sucker who died from rot grubs than the guy who became king by his own hand so I don't spend a lot of time beforehand trying to make some arc.