This is just a small example of a pervasive problem: the inability to believe that other people sincerely believe fundamentally different things. This is a human problem before it is an ideological problem. It afflicts people on the left and the right, perhaps not equally but close enough. Some of the sources for this confusion are actually huge advances in human civilization. The idea that we are all equal in the eyes of God is a moral triumph of the Judeo-Christian heritage. That belief often causes people to assume that we’re all fundamentally alike. And we may in fact be born that way, but we do not necessarily stay that way. It’s an understandable mistake given that the secular West is based on the deep-seated dogma of equality before the law (a dogma that rests on that Judeo-Christian heritage, FWIW).