Again, what? When? - Edit 1
Before modification by Fanatic-Templar at 06/02/2010 08:09:01 AM
He probably has some massive daddy/older stepbrother issues which mean that he is constantly hit by a sense of duty to avenge his mother, despite reality telling him otherwise.
When did reality ever told him otherwise? And I don't see what's especially irregular about avenging the murder of your family.