"Thanks to you, I die like Jesus Christ, to inspire generations of the weak and the defenseless people."
Cho was already known to have mental problems, and now we know that Cho looked at sacrifice, martyrdom, and the spilling of blood as good and redemptive things. Cho also used, in part, the story of Jesus Christ as an inspiration for, and a legitimization of, his actions:
"Do you know what it feels like to be humiliated and be impaled upon on a cross? And left to bleed to death for your amusement? You have never felt a single ounce of pain your whole life. Did you want to inject as much misery in our lives as you can just because you can?"
Cho mistakenly thought, as Christianity teaches, that two wrongs somehow make a right. Cho, like the God of Abraham, also had a big problem with happiness and success:
"You had everything you wanted. Your Mercedes wasn’t enough, you brats. Your golden necklaces weren’t enough, you snobs. Your trust fund wasn’t enough. Your vodka and Cognac weren’t enough. All your debaucheries weren’t enough. Those weren’t enough to fulfill your hedonistic needs. You had everything."
Cho deemed material successes and pleasurable lifestyles to be corrupting and immoral. And Cho's solution? A massacre! Cho took another lesson from Abrahamic religious thought in concluding that pleasure and indulgence are corruptive and violence is the corrective action!
How twisted of a worldview is it that considers indulgence, pleasure, and material wealth to be bad things? And how sick of a worldview is it that considers pain, death, and violence to be the solution?
It is the Abrahamic religious worldviews (Christianity, Judaism, and Islam) where the sickness lies. The values and virtues contained with Abrahamic worldviews are completely ass backwards. These horrible, anti-human worldviews have served as catalysts for deadly and destructive acts time and time again.
I've said it about ten thousand times, but sadly it bears repeating: Mental instability + religious thought = death.