Omega, of course it is a hypothetical situation. It is an example of something that I feel very much summarizes my point. Much like Sword Point did... the needs of the many outweigh the needs of the few. Why do you think democracy works the way it does? The majority rule.
Just because I am saying that the ends justifies the means, doesn't mean that there was not an alternate route that could have been travelled. A man is judged not by what he is, but what he has done. Reputation, rumours, etc will always influence peoples prejudice. (Another topic for another time.)
Going back to my previous statement: even if you kill the one innocent child to cure all the worlds diseases, you are always going to be shunned for doing it. There would be too many people you wronged in the process.