...may be summarized as follows:
I feel there is no compelling reason why I should not go-along-with current practices and prevailing trends.
Modern morality is thus not, or not typically, actively evil - it is instead conforming to evil; and this conformity is not active but rather has a double-negative quality.
Of course, once a person has gone-along-with evil (because he feels no reason not to) then he will be corrupted by that collusion - and will usually come actively to embrace that evil, to defend it, then to propagate it - but the initial move is more of an un-principled acquiescence.
Such behaviour appears cowardly - indeed it is cowardly; but much of this cowardice arises because courage is neither activated nor mobilized; and courage fails to deploy because there are no grounding beliefs which demand implementation; or which, when violated, cause a strong reactive response.
This, then, is the triumph of secularism.
Not to make men actively pursue evil en masse; but to subvert, erode, demotivate, confuse and relativize-away any grounds men might have for resisting or failing-to-go-along-with consensus.
Then, consensus can be driven incrementally towards evil by even a tiny proportion of strategically-wicked persons - and this will passively be followed by the mass, because there is no compelling reason not to follow it.