It's not so much that this is sane, it's that the idea that there's any analogous basis for constructing a view of the world that is sane is immensely problematic, unless you're selectively defining sanity to mean agreement with your own position, or using it as a shorthand for the most common types of mental processes in a population.
Ah yes, very good point. The problem is that I fully embrace the insanity in my trying to understand things I don't or can't. The point of religion is that it provides people with infinite understanding if they can communicate with a being that created and fully understands all. It puts people in a mentally destructive state of believing in their own belief. I have complete doubt in my reality, but religion depends on the absence of doubt. And that, I think, has had devastating effects on our society starting with an unwarranted sense of control that comes with absolutes. I live without nearly as many absolutes in how I view the world, but our natural tendency to categorize is perpetuated by the dictated facts and rules of religion. There is no logical room for interpretation for people who have such strong beliefs in the absolute rule of their god, yet there is so much variation even among people of any particular Christian faith.
No it doesn't. Many of the greatest religious thinkers where full of doubt. Try reading early existentialist philosopher Soren Kierkegaard if you want an example.