Though the druggie psycho Magneto of the “Planet X” arc was retconned into being an impostor in an Author’s Saving Throw, he was intended to be the real Magneto when it was written… so you gotta wonder why Mags, while in full-on baby-eating Complete Monster mode, saw fit to not kill Xavier, but instead… keep him unconscious and naked in a tank of something-or-other. […] He planned to release him once all humans are wiped out, and was looking forward to Charles someday looking over the new world and agreeing with him. At his most whacked-out, Mags still wanted to live happily ever after with Charles.