Great looking bookI'll be saying the same thing that Hector Avalos does in his book, The End of Biblical Studies!
Hey-- can you answer this question -- what will you be saying, to make a quick response to the inevitable question to you, "What do you think will be the End of Christianity -- it just fades away into secularism, or mutates into something else, or gets absorbed into some other religion?" -- From John S.
I think all three of your suggestions will take place depending on person and time, something which has been happening since the Enlightenment. There will probably always be pockets of people who embrace some of the Christianities that have previously existed. It's just that those groups will put themselves into the cultural backwaters. That is, so long as there is still something called a "Western Culture." If that becomes mutated into a global identity then Yahweh may even fade out of existence altogether, like Zeus, Thor and Odin have.