I am, of course, because it can't be done.
I look at so many apparently intractable problems discussed on MN and think "well, I wouldn't start from here".
Our tax and benefits systems are ridiculously convoluted, over-engineered and expensive to administer.
We've got academies, grammars, sec moderns and comprehensives. Why?
We've got hospitals in the wrong places doing the wrong things.
Etc.
But if we went back to first principles and rationalised all this there would be too many vested interests in too many areas. So we tinker and make things worse. Sad.