The Phenomenon Of God...
I believe that as we grow spiritually, and just in life in general, through our experiences etc, we are able to discern better what is best for ourselves. Not one of us can claim to know the truth, if belief was based on fact it would cease to be belief wouldn't it? You have no reason to believe you have thumbs because you can see them, that requires no faith. But faith dictates that you believe in something without any evidence whatsoever. That is the essence of faith. So how can you and I or anyone else claim to have proof that what we believe is indeed the truth or a fact. We cannot. If God exists, it is the being that is God that leads man to repentance, not our human efforts. Granted a certain part of this revelation of God lies within our power, that is our mental faculties and our ability to feel connected to something more than ourselves, but eventually, we must come to the realisation that any revelation that we get as to what exists beyond us is simply beyond us and not in our control.
So with that said, I see no point to argue that perhaps one religion is superior to the other, or God does or doesn't exist. Our experiences will eventually lead us to some truth. Whether that truth be relative or not, it is some form of truth. Therein lies the phenomenon of God and religion. What's real to you is not necessarily what is real to me.