Personally, I feel that cloning should be allowed but with restrictions imposed. Reproductive cloning on animals should not be allowed as it can create animals which give us more problems. However, DNA cloning or therapeutic cloning, which can provide important medical breakthroughs if successful, should be encouraged as lives can be saved and people can lead better lives.
However, like many issues faced by mankind, cloning has both its advantages and disadvantages. There is no outright right or wrong about cloning. Though unethical, it does have its value to mankind.