At some point you have to ask yourself if it's more likely that everyone else in the entire world is crazy, or that you might be mistaken. People are not shock

At some point you have to ask yourself if it's more likely that everyone else in the entire world is crazy, or that you might be mistaken. People are not shocked by horrible crimes because of the likelihood of re-offense. They are shocked by horrible crimes because there are things worse than simple murder, at least to most people. The idea that every murder is completely equal in every way is just plain silly. Torturing someone to death is worse than shooting them in the back of the head. Rape-and-murder is worse than murder. These are things that most people can see pretty clearly. Here's why: just ask yourself which you would prefer to have happen to you (assume that you won't be able to escape your fate no matter what happens). I'd take the bullet every single time, and there's a reason for that.