Child Molesters?

Why does the justice system put people that murder someone or do other crimes in prison for life, but they only give child molesters a few years? It is a life sentence for the poor babies and kids that they hurt! Those kids will have to have that on their minds the rest of their life. So, why shouldn't child molesters be put in prison for life? When they come out, they will just do it again to some other poor child. They cannot be reformed. There is no reason for them to be put back into society. How many times have you heard of a child molester getting out of prison and going to molest a child again, only to be thrown back into prison? Why did they let the sick out in the first place?? The justice system is not prevailing in these situations! AGREE?