Even if you don’t believe that it is literally fire, the point is obvious that Jesus Christ meant that hell is a place of unimaginable torture.
As for chyron’s point about “our perceptions” coloring things, I think it’s fair to judge God by the standards that the Bible claims he judges us. We’re supposed to love our enemies, God tortures his enemies for eternity. I’d imagine that if I personally kidnapped a nonbeliever and tortured them myself because they weren’t Christian, I’d be rightfully labelled an evil maniac. But that’s what Jesus Christ proudly proclaimed he does. Saying that a character that does such a thing is loathsome is not unfair at all.