I once heard it said that all errors in doctrine stem from a low estimation of Christ. The less we contemplate the cross, where He died, the just for the unjust, where He bore our sins in His own body on the tree, where He endured sufferings at the hands of man, but, far greater, where He bore the wrath of God in our stead (where He was once in the bosom of the Father, He now cries, “My God, My God, why hast thou forsaken Me?!)—the more thoughts of His sufferings enter into our thinking (physical sufferings, yes, but spiritual sufferings, as well), the more we can see God’s righteous judgment for sin (OUR sin), and the more we realize our unworthiness of His grace that saves to the uttermost (plucking us as brands from Hell).
Failure to comprehend Hell is the spirit of man saying, I’m not so bad...oh, the cross? Yeah, that was a rough day for Christ, wasn’t it?
Indeed. People(especially those living in our era) think they’re fundamentally good and that if there is a hell, “only really bad people like Hitler go there”. Ignorance of Biblical teaching is overwhelming.