From where do you derive your religious zeal in wanting to eradicate insanity/irrationality like vermin? Personally I find them to be enjoyable states of mind, and I also enjoy the company of many other irrational people. Perhaps you also need a word for people like myself, who are "postsane," in that we're quite capable of being rational when we need to be, but having been there, done the math, proved Godel's theorems and found rationalism rather dull, we grew bored and moved on.
I’m quite certain that I would find a world without irrationality to be an inhuman hell, and so would you. I would much prefer to eradicate evangelical, totalitarian mentalities such as the one you expressed like vermin than eliminate all those amusing, creative madmen who so enrich my life. Quite honestly, I think the appropriate response to your eradication agenda is this: go fuck yourself!
You wouldn't happen to be related to SithMasterSean, would you?
Also, the end result of eradicating all those with totalitarian eradication agendas is eradicating yourself.
Edit :Excellent suggestions in the comments. Two of them stood out for me:
We often use "insane" to describe people whose behaviour or beliefs are below the sanity waterline. But as most must would agree here, you cannot call someone insane with a straight face just because he happens to believe in magic.
I'm currently watching Future by Design, a documentary featuring Jacque Fresco and the Venus Project. Jacque came up with this word, "unsane", to describe people who basically, aren't rational because they haven't been exposed to the right ideas yet. Which would be different from "insane", which is more about irrevocably irrational people.
I like this word, because there isn't the tone of accusation we find in "insane". This neutrality makes it easier to say that we can do something about it. Insanity should be eradicated like vermin. Unsanty on the other hand can be fixed.
So, do you think this word, "Unsanity" might be worth using?