Argument: Deformed clones would still be happy to be alive
Nick Bostrom, Faculty of Philosophy at Oxford University. "Human Reproductive Cloning from the Perspective of the Future". December 27th, 2002 - "Such an imaginary point-of-view can help us put things in perspective. There is one argument that, as a future clone, you might understand and agree with: concerns about the safety of the procedure. The argument that we ought to postpone human cloning until we have perfected the method in animals makes some degree of sense. (Even so, suppose you were a slightly deformed human clone - would you agree that it was a terrible moral offense to have caused you to come into existence?)"