prof m's lab and cloning

The research that Professor Macosko is doing seems cutting edge and has potential to help cancer research, and research for many diseases that are currently only moderately effectively treated using receptor blockers, by finding the exact drug necessary to treat the disease and block the receptor. It has the potential to solve the problem we have with having a drug library of millions of drugs, but no diseases with which to treat them. Cloning seems like a very problematic area of science. On the one hand, who has the right to tell mourning parents that they cannot have a child that has the potential to be an exact younger copy of their own, yet how can anyone allow such a violation of the laws of nature? It seems ambiguous at this point, and I think it is good that it is not so effective or developed that it is inexpensive and becomes a problem.