That's because there is no such thing as a soul (consciousness can now be explained in pure brain activity - see the 'Consciousness Explained' book I recommend at the bottom of the pondering).
Besides, are you really advocating wilful ignorance? Taking that attitude we'd still be cowering in some cave somewhere. Evolution (or some god, if you still must) has given us the ability to reason , it rather behoves us to us it, does it not?