Andrew, I agree with snowguy that you do have an anger, but it's not with God as he thinks, but with the beliefs that some people have with God. I understand and sympathize with that anger, but when you have expressed that anger here, you often do so in a way that can come across as an anger with God rather than those people.
Given that I think that man creates god in whatever image he pleases then I suppose you are half right, but I don't believe there is a god, so it is impossible to be angry at nothing more than a concept.
Maybe if people were perfectly rational it would be impossible, but I don't think this is the case.
Otherwise no one could every really connect to any work of fiction, for example, I don't believe that Dumbledore really exists, so how could I be angry at him dying? Something doesn't need to be objectively real for it to cause emotions, and that's not a bad thing.