Inappropriate provinces of government

Inappropriate provinces of government:
passenger trains
parcel and post delivery
education
marriage

Appropriate:
national defense
adjudication of trespass & contractual dispute
umm...

Most "conservatives" are 65% or more liberalized. Like arguing for prayer in schools instead of getting govt out of the school business, they've already won. When you let govt define marriage one way, you give govt the power to define it the other way, when it has no business defining marriage. True equality-mindedness is required, no race or gender prefs or hatey crimes or any law or reg that treats individuals as a class or order. How far is the common voter from such libertarian principle?