I was rereading New Mutants 1.13 tonight, and it crystalized something for me. I have little interest in any X-Titles since 2000 because they got so busy trying to be edgy that they abandoned all sense of morality and hope.
My Case-In-Point is NM 1.13's depiction of Prof X. These days, he's a memory of an amoral douche, who shamelessly used kids and emergent AIs for his own purposes. Back then, he was a guy fighting a desperate war whose first duty was to his students, even if it meant letting them invade his most private thoughts.
Not really sure why Marvel had to make a jerk of him (other than to justify Vulcan's or Danger's Mustache-Twirling), but it poisoned the roots of one of their Great Franchises.