I see a slow, steady decline over the next century or so that's going to be pretty hard to turn around. That said, there will be people who view Christianity as a stabilizer in their personal lives or an edifying force, like a really good movie, but I do see a continued, steady decline. The problem is that morals and knowledge can much more easily come from other sources.
The big problem for "liberal Christianity" is that, sure, there are passages in the Bible that you can make fit into, if you push real, real hard, what we call modern liberalism, but
most liberals are not going to see a need to do it. Why bother? The Ten Commandments, for ex., have no relationship to modernity whatsoever aside from theft and murder. And prohibitions against theft and murder are shared far and wide outside religion for all sorts of good reasons. And so on. Even if it's a "liberal church," you still deal with the Bible, the stories, the ancient morals, the parables (which directly relate to things going on at the time), etc. And there are some, as who post here, who may not even see Jesus Christ as that significant, certainly sans the supernatural. And as with me, when you don't believe in the supernatural, there's really little point to it.
You know, maybe there's a God, maybe there isn't, and if there is, that God is personal, as God always
was personal. Tribes and teachers and priests have always assigned to God the attributes that they saw around them and valued. An angry, vengeful God fit the culture. A Deistic God fit that culture. And on and on. Maybe God texts and listens to Katy Perry? I mean, I remember the joke about the hole in the roof of Texas stadium - so God can watch the Cowboys.
