There is a fear on my part, warranted or not, that eventually there could be black market clone people for parts, maybe not in my lifetime, and I hope never at all. Science I believe needs some tempermant (I am not an expert so I don't know the temperment needed....I admit) from humanity. Like the knowledge that came from Nuclear experiments culminating in "the bomb", that science has helped in medicine, state and individual terrorism. Regulation is only one aspect, if not use in conjunction with Enforcement, this could eventually go very wrong. I pray I am wrong.