List any two advantages of cloning in the treatment of human diseases

1) It removes the barrier of infertility. 
Because cloning uses adult somatic cells, it is a process that allows anyone to have a child that is biologically their own. Even if that person has a reproductive system which does not support fertility, doctors could take the somatic cells and implant them into an embryo, creating new life. This technology would give everyone the chance to become a parent, even if they were not sexually active.

2) It could extend human life capabilities. 

In the developed world, the average lifespan is approaching 85 years for top nations. Even in the United States, the average lifespan is upward of 70 years for men and women. Not only could cloning help to extend life to even longer lengths, it could be a way to bring the rest of the world up to the current standards as well. In Sierra Leone, for example, the average lifespan for an adult male is just 49.3 years of age.

Improves food supply and provide organ for transplantation