Yes, he did grow more cynical as the years went on, but I think that's due to the optimism of his earlier work meeting head on with the reality of today. If you listen to stuff from "Class Clown", that describes a lot of the basis of some of his leanings (if he dropped out in the 9th grade, methinks that the idea of "progressive" education had a lot to do with that).
While fairly vocal about his misgivings of his Catholic upbringing, the fact that he stayed married to the same woman for 36 years and then remarried after her death is about as Catholic as you can get in that department. So I pray this to you, George. You may have despaired, but I think your faith was still there, all along:
"Requiem aeternam dona ei, Domine, et lux perpetua luceat ei. Requiescat in pace. Amen."