The best reason to constrain government.

I would have government defend the life and property of all citizens equally; protect all willing exchange; suppress and penalize all fraud, all misrepresentation, all violence, all predatory practices; invoke a common justice under law; and keep the records incidental to these functions. Even this is a bigger assignment than governments, generally, have proven capable of. Let governments do these things and do them well. Leave all else to men in free and creative effort.

— Leonar