Huh, I don't see the difference really here. If extending human lifespans is wrong (I think you and I agree that's not the point we want to argue), then doesn't

Huh, I don't see the difference really here. If extending human lifespans is wrong (I think you and I agree that's not the point we want to argue), then doesn't that mean working to extend human lifespans is ethically wrong? I think the conclusion of your line of argument is that you can never say a particular person is unethical. I don't think I like that consequence - it absolves anyone of guilt for anything. In an extreme case, how about this: "Stealing thing is wrong. Therefore, thieves are unethical people." Seems clearly reasonable to me.