i know what i would do..
i would not kill and experiment on all of the people that are supposed to be your constituants and fellow "pure" people, the poor vault experiment dwellers
The amount of radiation everyone is being exposed to everyday is experimentation enough, and that wasn't brought on by natural means. Unless you count what happens within a developing society on a planet that culminates into a nuclear holocaust natural. I mean, perhaps what happened in fallout is natural. I mean, how many societies can humans compare themselves to? We have NO examples, we are the only planet we know of, and if a few know of another secretly, the general human, from the general populous a.k.a. the mob, does not. And the mob controls the general opinion on things.
So, since humans have no clear, or perfect example of society and can only imagine a perfect one (weather they have the means to achieve this perfect society is another matter altogether.) it's all just a matter of opinion. Really, till that time, all of what we do can be seen as perfectly natural, even the harming of ones own environment.
The meaning of life, a question people probably still ask today, is to survive. That's it, life survives, that's what it does in the universe, so it is it's meaning. Why else would life ever feel the need to devour other life to survive?
Then you begin to discuss the need life feels to develop onto itself and become more complex... Like it was preprogrammed to do that for some unknown purpose (no, I'm not discussing religion.). Then it goes back to a lack of factual information, and then lastly, depression on being stuck in my current time line... *sigh*