by supporting cloning, it does not mean that the only clones will be human. Cloning can be used to help weed out diseases in plants and animals. Cloning can also be used to create tissue or organs, without creating an entire person

Even if political leaders or other unsavory individuals were cloned, that does not necessarily mean that the clone would become the same exact person. This clone would grow up in a different environment. Not all traits are carried in genes, some are nurture, not nature.

cloning technology can be used in the future to allow a couple with a sterile partner to still have children with DNA from both parents.

by studying cloning, scientists can research genetics more thoroughly. It could help to understand gene compostions better and the effects that genes have on human nature and personality.