So I read through the 21 pages so far, and basically a quick summary. For basically every reason for the belief in no God, Subby's response is, to paraphrase, you're dumb, I'm right. I think that is a pretty fair assessment. His first response should that he had no want to hear any answers, but just to tell people basically that they were dumb and his opinion was superior. There was no want for an actual discussion; because if there was, flat out dismissals of others opinions would never happen.
Just for reference for Subby though, using the proper term God, instead of god, suggests that one is speaking about the Abrahamic God. Capitalizing the G in God usually means one is talking about the Christian, Jewish, or Muslim God. Not some other god (notice the small g) like Zeus or any other "pagan" god.
Finally, even though I do believe in God, the best reason for a belief in no God is that there is no a single thread of evidence to support the existence of God. To believe in God, one has to have blind faith, as there is no evidence supporting that faith. At most, maybe there is a feeling, but I can get that same feeling by drinking rum.