Superheroes not only pound the bad guys: They help people. Sometimes, this help can take the form of literal healing. Ever been in a game where you needed healers, and they were the lifeline between victory and defeat? That rings true in the comic book world, too. So let's recognize who our healers in the comic books are.
Whether he's called Angel, Archangel or his real name, Warren Worthington III, the winged rich boy had his wings amputated, then they became cybernetic, then they regrew, then he went through other stuff. Practically, he would have been useless with only his ordinary wings. But lo and behold, he developed a new power: the power to heal others. So if he could regenerate his wings, that would mean he would regenerate others' bodies as well.
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