In the movie, there was a private corporation selling this organ-replacement service to wealthy clients, and telling them the organs are grown in a laboratory. But in reality, the corporation is cloning these wealthy clients and growing entire adult human being and then harvesting those clones when the replacement organs are needed by the paying clients.
Cloning is used for medical purposes, to revive endangered species, to cure genetic illnesses, for body replacements, to cure infertility and to take a step forward to immortality. Human cloning essentially means taking a human being's DNA and reversing its age back to zero and also, we may be able to cure cancer if cloning leads to a better understanding of cell differentiation.
Though cloning has benefits, there are still reasons why human cloning is banned and it is due to playing God, religion, embryos at risk, embryos killed and human rights. During the human cloning process, a lot of human embryos are created and tested for viability. Some are either discarded or frozen for future use. This is why it is heavily debated if killing a human embryo that is only a few living cells is murdering a person.
It is also heavily debated whether experimenting human embryo that are grown in the laboratory is accepted in the society. We all know that cell is the basic unit of life and embryo is defined as is the person as it develops from the single cell of the zygote. And so from the definition itself, it is already a cell. Some people said that it should be accepted since they are embryos formed in the lab and are still used to extend life span. Other said that it shouldn’t be since it already has a life and experimenting embryos means experimenting life. Since not all experimentation are successful, this embryo, which has a life already, may be wasted. And also, we can’t ensure if there will be mutations somewhere in the future.
Cloning has helped human beings to extend life span though it has some disadvantages. That is why it is still debated whether sacrificing a new life for the old life or just choosing the new life. This is still very controversial.