God, Cause and Effect, and Natural Belief

One reason people offer for believing in God is it natural to do so. David Hume argued that if you had to prove the legitimacy of the principle of cause and effect, you could never do so without begging the question (that is, assuming what you're trying to prove). But since it comes naturally to us, and is practically useful, we have no reason do be skeptical of cause and effect. Others have argued that belief in God comes naturally to us, and even though perhaps we can't prove that God exists, it is sufficiently natural that we ought to continue to believe it until someone proves to us the contrary.