No, it isn't. I'm assuming that you are talking about therapeutic cloning, which is the process where you clone a human to get a human embryo so you can harvest stem cells so you can make organs and transplant those organs to people that need them. Of course this process kills the embryo. I view this like I view abortion, the embryo is not a person yet, not technically. They don't have any thoughts or experiences, they are living, but their life force, is nothing more than a flower or a blade of grass. And to kill a blade of grass so you can get an organ to save a life, is okay. Of course the cons to therapeutic cloning is how much it costs, but this debate is more about ethics than anything else, and killing a human embryo to save a life IS ethical.