How do you call someone who is religious only because it makes them feel happy?

[Der/die AtheistIn]

At first I was having trouble wrapping my head around the question as it was posed. They don't believe god but they believe one more gods exist...

But now I think I get what you're saying. They don't believe in the bible god, but they do believe there's some sort of magic sky daddy out there. But for all they know, that sky daddy doesn't necessarily have a book with this commands and rules for us in it. Is the gist of your question? If so, the answer is easy. You call those people theists. 

THEISM
noun
1.
the belief in one God as the creator and ruler of the universe, withoutrejection of revelation (distinguished from deism ).
2.
belief in the existence of a god or gods (opposed to atheism ).


There is nothing in the definition of theism that ties it to any specific organized religion. Its simply a belief that some supernatural creator/governor/sky daddy exists, i.e. 'something more than just this' as they say.

I guess I didn't express myself clearly enough. I referred to people who practice religion out of comfort. I wanted to include polytheistic religions too.