I look at it from the other players' point of view also. For example:
Player brings in a wizard. He suffers through the "Cast colour spray and then fire a crossbow" levels. He gets outfitted with whatever haphazard random wizard gear might fall in your adventures. A Wand of Comprehend Languages with 3 charges, etc.
You, on the other hand, play a martial...not really caring because you won't have that character at higher levels anyway. Said martial character dies. You get to bring in YOUR wizard with gear specifically tailored to his every need and whim.
Kind of treads on his toes and makes his hard work seem less.