God hates the sin, but loves the sinner. Sinners like Hitler who sin so bad end up in that bad place. The sinners that are more good than bad end up in purgatory to purge them of the sin-stains from the soul, then after they are cleaned up, can go to Heaven. Goody goodies who hardly ever sin get that special treatment and free ticket to Heaven.
To error is human, to forgive is divine. Treat people like you want to be treated, forgive them if you want to be forgiven. If you forgive them, they are forgiven, if you hold them bound they are held bound. You cannot keep someone down without also holding yourself down as well. So it is better to forgive than to always seek revenge and payback.