I agree with you 100% but doing so would cause a war on the scale never seen before.
Remove the god concept and all you are left with is wealth to try and acquire through war which is the truth behind all wars in the first place.. "They have something we want. Lets go get it by motivating our people with religious propaganda."
Isn't it funny how animals don't need religion to know it is not right to kill each other for more "wealth". Have we really evolved?