and they have saturated their market. All of these various and sundry permutations of doctrine are efforts to trot out some "new and improved" Christianity to keep those butts in those pews. Unfortunately, they're clamoring for a growing share of a shrinking market.

Since religion is emotionally motivated, they have to deliver increasing emotional rewards to believers (who are just consumers of emotion) to keep the believers coming back. The result is religious extremism.

As the material wealth of religion increases in inverse proportion to its ability to deliver a satisfying emotional product, it will increasingly have to resort to force to hold market share. So far that's just been political shenanigans but they'd be burning people alive again if they thought they could get away with it.