Many reasons. Partly because it's part of the tough guy machismo you have going. Partly because people tend to be obnoxious and piss you off. It's kind of like Smoker really.

From what I remember I might have. It's a little... filtered. I had a good memory even when I was young but everything feels slanted so it's hard to say. And I thought you liked it here! I don't think you're a brat at all. I think you're frustrated, in a rough time and place and without adequate means of expressing it without blowing up like fireworks.