I would say he has quite a few problems. His energy seems to go in the wrong places.

Shorter Stanley Kurtz: Let me tell you something. You’re in a hell, and you’re gonna die in a hell, just like the rest of ’em!

I think it all has its roots in a failed relationship with Kathryn Lopez. He was so initially smitten (“She appeared like an angel. Out of this filthy mess, she is alone. They. Cannot. Touch. Her.”) But then there was that unpleasant incident at the Pioneer Fund fundraiser…the final scene must have been very awkward for all involved.

Kurtz (forlornly holds out copy of The Bell Curve): “But I bought it for you, K-Lo.”
K-Lo: “I’ve already got it.” (Slams door.)

Sad, really.