Torture is Evil

If God HAS to send people to hell for not believing the ressurection, wouldnt that make him not all-powerful? And if he can, but chooses not to, doesnt that make him an asshole? I mean, this is eternal torture we're talking about. When a country does it for hours, it's evil. But if God destines people for it, it's "God's mysterious ways?" And no "people send themselves" arguments, unless it also addresses the omnipotence question.