The fact that people of different religions worship entirely different Gods is also telling. And just because a person is born in a particular country, and into a particular creed, he is convinced that his God is the only true one. This does not mean in itself that all religions are wrong, but it does mean there are an awful lot of false Gods out there, with a lot of pathetic people in tow.
On top of this, the incredibly irrational arguments Christians offer as proof of their God's existence are alone enough to convince any thinking person that such a God cannot exist! A wise God would not empower idiots.
Has it ever occurred to you there might just be some truth in religious scriptures, but that misguided souls have misinterpreted them? Might I suggest that instead of God being Truth (as Christians proclaim), Truth is God - and that the Truth has many names.
What is this "Truth" I hear you ask me. Look around you, Truth is not apart from the physical world.