I met this fucker several times, read a couple of his books, and dismissed him as a talentless, egomaniacal hack. I shall not mourn his passage.
At least Harlan Ellison has talent. And is still an egomaniacal prick. I once saw him Mace a Convention security guard (who was dressed, appropriately, as a Redshirt from Star Trek) right in the face, as the poor guy was running up to give the little dwarf a phone message. "He was attacking me!" Ellison cried out. Little prick.
Finding out how many 'big-time' authors are such despicable and utter pricks, cunts, homos, complete and utter dorks, and idiot-savants, it would amaze you.
I have a very short list of authors I have met that I do not despise as human beings:
Stephen King (though he's an utter liberal douche)
Roger Zelazny (fucking duh. What a saint)
George RR Martin
Geez, I can't think of any more offhand, though I have met (and partied) with probably five times that many.