exactly.   if God a turn bread and wine into flesh and blood, then why can't he stop horrible things from happening to humanity?   how often have seen on the news after a major tragedy something like:   "that tornado pulled the house down around me but I prayed and God was looking out for me, praise Jesus!"   but the debris from their  house then destroyed the one a block away and killed a convent of nuns or  mother and three small children,etc.    where is god in this?  and then, if God isn't omniscient, omnipresent and all omnipotent, why believe?   these were the exact questions that led me to become an agnostic.