There are many abstract concepts which cannot be described by science. The meaning of life, the self, freedom, beauty, etc. For me, the concept of a God is no different. These concepts leave a lot of room for discussion. Ultimately I believe that the question is not about whether these things exist objectively (see my second theorem) but about how we individually choose to believe in them.
What is the meaning of life? What is the self? I don’t know. Nobody knows. That’s because we’re not supposed to know. It only makes sense to think about these things in terms of what the meaning of life or the self are to you. This forces us to give up the original questions which seems to be the only rational thing to do (at least until science can branch out onto this area). Even if it does, it won’t really matter. Having an objective definition of something that is almost defined to be exclusively subjective does not change our opinions and thoughts about it. In fact, according to my second theorem, these things wouldn’t exist if we didn’t exist and therefore there would be no objective answers to these questions or reasons for their existence.
All this to say that I don’t believe in “God” in the traditional sense but I do feel there are people who I believe are Gods to me. Chopin is my God of sadness, melancholy, darkness, longing and desire. Ray Lamontagne is my God of happiness, forgiveness, memory, passion and love, etc. Bach is my God of mystery, entanglement, confusion and courtship. All are, to me, Gods in the domain of music. This does not necessarily imply any kind of underlying religion. Although given the loose definition of religion, I wouldn’t hesitate to say that music is my polytheistic religion.
Gods, to me, are more than just people, things or concepts I idolize, but rather that by which I choose to live my life, or at least part of it. They are entities that have left a permanent scar in my soul, mind and body and which I feel have shaped me in some way. In this respect, one can say that his parents are his Gods. I’m not a religious person, but I do believe we can all believe in a concept of God or gods.