I sort of answered this in your other topic, but you need to clarify.
First off, as an atheist, I don't necessarily believe there is no god. I am basically as sure as possible that god could not exist as depicted in the bible, but it's possible that there is something that meets some or all of the criteria you're mentioning.
I'm going to assume you mean god as he is portrayed in the bible. In that case, I'd worship him. If you've seen the Twilight Zone, there's an episode where there is a horrible child who is basically all powerful. So, no matter how awful he is, everyone around him has to smile and nod, and pretend they love and worship him. That's how I would feel about the god of the bible, if he was real. I may think he's awful, but I don't want to be tortured or anything, so I'd do what he said.
