Vicarious Atonement. He died for your sins, not your suffering. According to Christianity, God is reconciled with sinful humanity through the death of his only son. (Although the lack of Original Sin makes one wonder what the point was in the first place?
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The Golden Dawn includes the symbolism of suffering in it's thematic pattern of initiation. This follows the precedent established by Jesus who specifically bound suffering to his realization of godhead.
The Golden Dawn follows this pattern by having the candidate for Adeptship clad in a "Robe of mourning" and wrapped in the "chain of humility", before being bound to the "Cross of Suffering." In essence it is a glorification of suffering as an attribute of righteousness and a prerequisite to the attainment of the godhead.
Thelema on the other hand rejects this outright. This is one reason why Crowley refers to the The Hanged Man card as the Cenotaph.
It's not stupid at all. This stuff can be difficult to understand at the best of times.