I don't think it matters if this "god" exists at all. An all powerful being that takes attendance at "services" is an absurd notion.
This is a reasonable position. As I noted earlier even if one assumes there was an all-powerful being who created the universe and everything it doesn't then follow that that being would have specific requirements of one tiny little group on one tiny little planet circling one tiny little star on the edge of one of a zillion galaxies.
For me the "contentious part" about religion is the extrapolation of some "requirements" by that being. But, by the same token, it would make sense for someone who needs a "personal God". If there IS such an all-powerful being it makes sense to the believer to want to "please" that being because then that being could "take care of the believer" and protect them.