It depends how you look at it. You could look at a single low level player as being part of a "faction" that you have grew to hate and therefore have hatred for that faction and everything/everyone in it, therefore everyone belonging to that faction needs to die. However, you could have pity for lower level players because they are inexperience and less powerful.
 
	I was going to make a comparison to Real life war, but that would be stupid as there are no "levels", only experience and gear/weapons and death is permanent.
 
	However, i know what a pain being ganked was for hours on end, almost to the point where it made me quit. Do I care if my ganking makes a lowbie horde quit?? Maybe ...i dunno....