Human clones are and will be separate people, of course. But it will be a very natural weakness not to regard them as such. Instead, this whole field of technology encourages profound selfishness and vanity. Cloning offers the opportunity to avoid the randomness of the lottery and create an exact copy of ourselves. Anyone who sets out to do this will be extraordinarily prone to regard the result as property rather than a person.
Genetic engineering ups the ante even further.
The fantasy of Pygmalion will have come to be. Conclusion Life extension and cloning are both technological tours de force which may leave the patient raving and in chains.