It's your state of mind. You sit down in front of the TV expecting to be entertained while in traffic you mentally prepare to be disappointed or angry. It's a matter of perspective and expectations.
Because it's funny when he's a **** to everyone else but when he's a **** to you people usually get bent out of shape.
Because he's a **** who saves lives, as compared to a **** who makes yours more difficult? Being a life-saving genius tends to buy you a little leeway.