If we are just specks of dust hit by lightning, if we have no spark of God in us, why not just take whatever we can and devil take the hindmost? I mean, we are fools not to do that if there is no right or wrong.
The vast majority of human beings dislike and even actually dread all notions with which they are not familiar... Hence it comes about that at their first appearance innovators have generally been persecuted, and always derided as fools and madmen.