No, I might not be willing to off a thousand people to find the cure for cancer, but I sure as heck have no problem using that cure once it's around, because if someone had, say, medically experimented on me against my will, I'd feel a heck of a lot better knowing something good came from it. Since I would have no objections were I the victim - to it's use, not to actually being the victim - I would feel no dilemma using that knowledge to save people, no.