Some people ask why should we clone human embryos. Some people may think that biologists are cloning human embryos only to see how far they could push it, but there are many legitimate reasons for investigating cloning. Embryologists believe that research into cloning could help improve the life of future generations. Many biologists believe that they have a personal duty to the improvement of society. Doctors hope that by being able to study the multiple embryos developed through cloning, they can determine the causes of spontaneous abortions.
Cancer research is possibly the most important reason for embryo cloning.
Cancer cells develop at approximately the same phenomenal speed as embryonic cells do. By studying the embryonic cell growth, scientists may be able to determine how to stop it, and how to stop cancer growth as well. Another important area of embryo cloning research is embryonic stem cell development. Stem cells are undifferentiated cells that can develop into almost any type of cell in the body. These cells are not attacked by a person's immune system because of their fast development and undifferentiated status.