There it is in a nutshell. If your a honest upright, decent person, and you treat people with respect and courtesy you have no need to change your name.
However it has become fashionable to be rather the opposite. Then change your name when life gets too hot.
There are a few exceptions, Bighorn/barbossa/ etc, etc etc just seems to like taking a break, and coming back with a clean name. However if you see him flying a 109 down low stall fighting you pretty quickly figure out who it is. He has a distinctive "style" all his own.
