according to jean Jacques Rousseau not all humans are irredeemably evil, there's some good in humanity no matter what crime they did, just they have to prove that they have a heart inside and compassion, while i don't agree that suicide should be the solution there's always a third option.
maybe Hitler, Stalin, bin laden, etc are homicidal monsters, but that doesn't mean that all humanity are like them.
and by the way not all murderers love to murder people, some of them want a better life without killing anyone again.
COME ON, DON'T BE PESSIMISTS!!!!
all we have to do is look the things and people on the right side.