Sanity for anyone is pretty much out of the question, as both the saint and the sinner appear only equally insane: the saint appears it for actually believing in a place of eternal torment; the sinner, for deciding to risk going to that place of eternal torment.

The Christian who loves his Master needs not fear any longer for himself. For it is then completely irrational, as it is written thus: 'Perfect love casts out fear.' However, it is very much rational for one to instead fear for the enemies of God.

On the one hand you had people constantly fighting Hell; on the other, you had people constantly fighting Hell on earth.

Some skeptics believe religious people are religious because they fear Hell. It's about as fair as saying skeptics are skeptics because they fear the ridicule of modern society.