The problem with human cloning is strictly ethical at this point. As it was with animal cloning always the first attempts are expected to provide results which are sub-optimal. Since we are talking about humans no ethics commitee is going to allow an attempt that may provide sub-optimal results.
You may argue that religion is also against it but in the past few years thankfully religion stopped playing part when it comes to health care in most countries.
I believe that if human cloning is perfected in countries were there are no rules against cloning (I've seen a documentary that people are attepting it in some countries) I believe that the rest of the countries will follow.