Superman and the No-Kill Code

What are people's opinions on this sub about whether or not Superman should have a 100% no kill code? This of course heavily relates to which version of Superman you grew up with and what you see Superman as "representing".

Personally, I am against a 100% strict No-Kill rule for Superman. Primarily because there are destructive forces in the DC universe that both can only be stopped by killing them and whom only Superman is powerful enough to do so (Such as Doomsday). Batman can have a No-Kill rule because if he encounters someone strong enough that he can't deal with them without killing them, he can call someone stronger. There's no reason for him ever to follow through with that situation. But because Superman is the CEILING of power, the buck can't be passed to anyone else. At a certain point, he has a responsibility to make the hard choice, because no one else can.

Edit: I think I can condense my point more succinctly to the following:

Superman will ALWAYS make the best choice available to him, because he is both smart, wise, and good enough to do so. In almost every case, the best choice avoids killing anyone, and his power allows him to execute that choice. But if the best choice truly was to kill, after completely exhausting all other options, Superman would not run away from responsibility. He never has.