From a biological perspective, I would regard the current Western insanity as a 'mismatch' problem - Man is a social animal; human ancestral societies were always religious, therefore Man evolved to function in a religious context.
But modern Western societies are non-religious/ anti-Christian. Man is not adapted to
live in a secular society. Men are psychologically un-equipped for atheism.
Modern Men thus find themselves in an alien, incomprehensible, meaningless social environment - social reality is unreal, the human mind is disconnected from human society - therefore the inhabitants of modern Western societies are insane*.
*By insane I mean some combination of qualitatively behaviourally maladapted, unable to do reality-testing, behaving in an un-understandable way, having deranged emotions that reduce reproductive success, suffering a fragmented and non-consecutive stream of thinking.
(Note: The above is a biological explanation, based upon scientific models; which means that - even if correct - is is partial and distorted. It is not an ultimate explanation.)