Thirty-two years ago this month, Jean Grey finally overcame her own darker nature and overcame her Dark Phoenix persona thanks to the power of love and stuff.  It was a powerful moment (immediately followed by her committing heroic suicide as her horrified fiancee Cyclops looked on) and even the fact that backstory has been altered to where it was never actually Jean in the first place can’t kill the power of that moment.  Since then, many Marvel characters (and nearly all the X-Men) have had their “Dark Whomever” story, but each successive iteration seems to have resulted in diminishing returns, with Cyclops himself now in the throes of a Phoenix-inspired quasi-villain turn, something he, of all people, really should have seen coming.

The MS-QOTD (pronounced, as always, “misquoted”) embodies fire, ultimate power and life incarnate, asking: 
With the increased sophistication of story-telling and more realistic multi-dimensional characters, have we reached a point where “Good Guy Goes Bad” has lost it’s power?