Although sure to piss off the Catholics and Orthodox Christians, I don't regard the existence of God to be necessary in the belief of Christian religion, or any monotheistic religion. My relation to any god is a personal matter. Most of the times it's a feeling of connectedness with the world as a whole. This doesn't hinder me from following Christian ethics or serving a Christian community.

I guess you could call this a practical argument for religion, not necessarily against God, but not in its favor either. There are, as far as I know, no valid philosophical arguments for the existence of a God, understood as an abstract entity in an external world that controls our earthly lives. I find the idea of an omnipotent entity interesting and important for other reasons (like keeping the crowd in check), but not central to the way in which I live my life.