I (as biologist) am an agnostic which means I simply don't know if God does exist or not ... and if he (/she/it) exists, what his aims and intentions could be, if he 'knows' us as individuals and how much influence he has.
If you like to read my thoughts about the topic, you may check one of my old articles (don't upvote it as it has no impact anymore!).
Anyway I cannot imagine God to be like religions describe him.
I totally agree on the way people describe God, it´s a difficult task to describe something way beyond the capacity of our understanding as it is difficult to un-explaining God out of the wonders that we see and experiment around us every day. I think it´s a way of seeing our limited knowledge of things, thus something greater should maintain this world in order until we find more about who/what he/she/it is. I believe in God though. :)
Scientists believe that individual genes determine the tendency to believe in God. :)
(As you can read in my article mentioned above.)
I should add that I respect religious people and their decision to believe in God, even if I don't believe as well.
There are many scientists, there are many religions, there is only one God. Imagine for a minute if we had various laws of gravity, various suns wandering within our solar system, and the planets just loose in the universe. I think that would translate into a HUGE MESS. Well, thank God there is One God thus one stable and faithful way of maintaining all things together. We are short minded you see... and I am not a religious person either. I just can´t deny the perfection of God, it´s everywhere, except where man had own choice, in those areas, we are living a mess.
There are sun systems with various suns. Ours has one only - more agreeable for life to develop. There are several possible explanations for the existence of the universe. God like religions see him, is only one of them.
By the way, did you read my article? ;)
If you want to engage in unsubstantiated hypotheticals, why not assert a better universe. How about a universe with such laws of physics that people would live on every planet around every star and traveling between starts would be fast, easy and interesting? Why not imagine a universe with no suffering and no mortality for humans? And a vision that would not see based on just 3 colors but 20 so you could see the universe in its real glory and not just the limited frequencies of visible light?
It's very easy to imagine both worse and better universe and laws of physics, but what does this tell us about this one really? We can't even assert that a different universe is possible, let alone that it would be better or worse than what we have. The only universe we have access to and that we can examine is this one, so talking about other ones and their properties is baseless speculation.
Is there really nothing that you see around you that cannot be improved so you would talk about perfection? The universe is vastly an empty vacuum with wastelands sprinkled in there and there for good measure.
How does the fact that we are living a mess prove the existence of a god anyway?