Ad hoc morality is not really morality. Finally, as much as I value the work of C.S. Lewis in general his The Abolition of Man in particular, I would be misusing his book were I to argue from it that because there appears to be substantial agreement among the peoples of the world about the rules of right and wrong, therefore these rules are moral absolutes. Consensus, regardless of how extensive or enduring, is no sure measure of morality. All too often the majority has consented, either explicitly or implicitly, to colossal evil. Morality is not determined by nose count.
Majority is no synonym for morality.
A million times zero is still zero. Simple consensus, like simple consent, is not a moral justification. Morality is independent of majority opinion and of pragmatic preference. As Archibald Alexander somewhere observed, virtue is not known by reason alone, but by revelation and by Providence. Sir Philip Sidney s way of saying it was to insist that the only impregnable citadel for virtue is religion.