A really hard thing in the text is realizing wrong from right. In one of the chronicles a man shot some of his team mates to save abandoned Mars. Later he partially regrets it, but then thinks not. The really hard thing this man went through is deciding between about 7 men, or the life of an abandoned planet.
My first thought is that he definitely shouldn't have shot the men. He doesn't know that the planet would be messed up by humans. It's not their fault. He took these innocent mens' lives without even thinking. These men have wives and children. Now they're gone. Just like that. I believe there's never a reason for killing someone. Horrible things can be done, but taking someones life is just not right. War, revenge, the death penalty: all are just plain disgusting. I mean, I believe in revenge, but not to extent of murder. He shouldn't have killed the men: even to save a planet.
On the other hand, he may have done the right thing. A few lives to save a whole planet might be acceptable. Terrible, but acceptable. Even though the planet was abandoned, a few lives still rome it. That means a whole civilization can be brought back. A civilization vs. a few lives; one definitely ways over another.
I still think he was wrong for killing them. The planet could have been saved another way with reason, not murder.
