Nothing in Alice in wonderland in acually "sane". Alice is falling into the world of wonderland which no human has gone to. It is like if someone found flying cats, no one would believe them even if it was "sane". Overall sane or insane would be a exageration or underestimate.

Human development would not have been any better without religion because it is religion that sane in this unknown existence.

That would be "sane".

One prefix for sane is insane, sane meaning healthy.

Hell no, Hitler wasn't an cannibal, He was an sane human being.