I read the God Delusion by Richard Dawkins a few months back. He is an entertaining read on this kind of subject and I would recommend him. Not saying I agree or disagree with it all but worth a read.
This is a flavour of his take and some of it pertinent to this - apologies for not spouting my own thoughts, just think it's worth listening to folk who have thought about it for a bit longer than I have! I am so used to referencing everything - don't have thoughts of my own anymore! However I should say that I do believe there are many unexplained things and I like it that way.
I want to end by returning to science. It is often said, mainly by the "no-contests", that although there is no positive evidence for the existence of God, nor is there evidence against his existence. So it is best to keep an open mind and be agnostic.
At first sight that seems an unassailable position, at least in the weak sense of Pascal's wager. But on second thoughts it seems a cop-out, because the same could be said of Father Christmas and tooth fairies. There may be fairies at the bottom of the garden. There is no evidence for it, but you can't prove that there aren't any, so shouldn't we be agnostic with respect to fairies?
The trouble with the agnostic argument is that it can be applied to anything. There is an infinite number of hypothetical beliefs we could hold which we can't positively disprove. On the whole, people don't believe in most of them, such as fairies, unicorns, dragons, Father Christmas, and so on. But on the whole they do believe in a creator God, together with whatever particular baggage goes with the religion of their parents.
I suspect the reason is that most people, though not belonging to the "know-nothing" party, nevertheless have a residue of feeling that Darwinian evolution isn't quite big enough to explain everything about life. All I can say as a biologist is that the feeling disappears progressively the more you read about and study what is known about life and evolution.