Is hell immoral?

Does it make sense to you to create a place where everlasting excruciating fiery torment exists for some people (souls)?

Who do you believe is deserving of such eternal torture? For what purpose?

I ask because many democratic nations do not have the death penalty, do not torture even those guity of the most heinous of crimes, and the primary focus is ideally on rehabilitation of individuals (if possible), and protection of society in the meantime, not revenge.