What would be the function of the latter?
I've already answered that - to allow a woman with certain types of very rare mitochondrial disease to have a baby without the risk of inheriting of that disease. That doesn't appear an unreasonable motivation even if there might be other ways of achieving the same (which come with their own ethical challenges to the conservative ethical community).
Or of course to create a master race - although as I've pointed out that is more science fiction than science fact.
But I think perhaps the wrong question is being asked. Perhaps the more relevant question is a hypothetical one at the moment. Namely, were a cloned human being to be born how would we consider that clone to be in human rights terms. Now my view would be that a cloned human being would be identical in human rights terms to any other human individual. A lot of the issues around cloning (and its taboo) seem to stem from a view that somehow a cloned human being would be different and lesser in human rights terms. But there is no reason why that should be the case, and anyhow it is for society to determine whether this would be so.
I would ask you perhaps to learn a little of the ethical debate that raged in then mid to late 70s surrounding IVF, which included a similar strand of (in my view faulty) thinking. Namely that a 'test tube baby' would somehow be considered not fully human by society, would be considered lesser in human rights terms and therefore harmed by being allowed to exist. That seems a particularly perverse argument now, 40 years on from Louise Brown's birth, but that argument was there none the less.