HELL NO. The idea of God has served as a basic moral compass since man started growing as a species. Given the other choices we have, I would say that the idea of God in any form as an absolute necessity in a human's life, at some point. Everything else is far easier to corrupt, and God in and of itself as a concept is incorruptable, IMO.
I think thats really the most important thing about God. God cannot do wrong, whereas everything else in life can do wrong or go wrong. To be faithful that there is a larger, supreme being carefully guiding your life in the right direction for you is extremely comforting to me. The closest thing we have to that is Communist Government, and obviously, Communist Govermments do wrong, and go wrong, and misdirect your life.
EDIT: I'd also like to point out that the idea of God came before every other moral compass we as a society have developed.