they ALL can't have it, and in DC, its very much almost all of them, all the major faces are all the biggest pissbabies about killing, not even "super heros killing" but the very CONCEPT of Death itself, its so beyond the pale of how to view saving people and redemption that its baffling, its perfectly resonable to always want to save everyone, or try and redeem everyone, but DC Hero's especially Superman and the big names, have an unbridled terror at the idea of even evil people dying from "something else" including their own hubris.
and still you are just fuckin wrong, you want Wonder Women to become Superman in mentality, its retarded, he's already right there, there's already 4 dozen hero's in DC with the "never let anyone die" Mindset, Wonder Women is, at her core, a warrior, and a soldier, she'd kill MORE if her compatriots didn't have such a problem with it.