Truth is so hard to tell it sometimes needs fiction to make it plausible.
If you look at the various strategies available for dealing with a new technology sticking your head in the sand is not the most plausible strategy.
The difficulty for most of us in the modern world is that the old-fashioned idea of God has become incredible or implausible.
This is actually a very important principle that science is learning about large systems like evolution and that futurists are learning about anticipating human society: just because a future scenario is plausible doesn't mean we can get there from here.
Liberalism is an attitude rather than a set of dogmas - an attitude that insists upon questioning all plausible and self-evident propositions seeking not to reject them but to find out what evidence there is to support them rather than their possible alternatives.