I have nothing against Christian Scientists' rejection of modern medicine. That is their business. But, I wouldn't want one to be my doctor.
I wouldn't want to go into surgery with a doctor who says "Surgery doesn't ever work... but I'll give it a go!" I would certainly not believe a doctor claiming "I ought to be your doctor specifically because I know medicine never works!"
But that is what conservatives say, especially the neocon/Norquist wing of the Republican party. Their predictions that the government can do no good, that common social infrastructure can do no good, are self-fulfilling prophecies if they have power.
It simply makes no sense to trust such an attitude with control of government. "The problem with cars is they always end up in a ditch... sure, I'll drive!"
There are conservative principles which are useful, good American law really should draw from American conservativism and American liberalism... actual conservative philosophy, oddly enough, is not the main problem.
The main problem is the quasi-anarchic authoritarianism (a contradiction of terms, but an accurate description) which grows in conservativism, and which wishes to and does run the government.
They refuse to actually make the government smaller, because let's face it, it's good to be the king and is easier to propose when the other guy is in control. Yet they DO insist there shall be no compromise on their political theory that the government must screw up anything it is involved with, and dutifully screw everything up to show their sincerity.
You can trust people who don't trust medicine... but you cannot trust a Doctor who doesn't.
(also posted at myleftwing.com)