Are you saying there is no prostitution now in Colorado Springs? Does making it illegal limit the role that government plays dealing with prostitution?
Think about it and get back to me.
The libertarian social philosophy (or more like "agenda") is moving right along. Abortion, homosexuality and pornography, things that are abhorred by God and people that believe in Him, are legal. Libertarians are slow to get prositution and illicit drug use legal in all 50 States, but it's on their "agenda".
Regarding the role of government when it comes to moral laws: "The magistrate, the ruler, "is the minister of God to thee for good" (vs. 4). The ruler is God's minister, His diakonos. He is a deacon, a laborer, a ministrant, an attendant to people for God. As the derivation of diakonos shows, he is one who runs errands: God's errands. In particular, he is to be a Christian teacher and pastor. If the ruler is the minister of God to men for good, then he must rule in accordance with God's judgment of the good, not man's willful, subjective desire to redefine the good. If the ruler is a minister to men for good then he must enforce God's law, not man's desires: there is no other alternative."
"All law commands human action; it seeks either to restrain or to urge particular actions. It necessarily says either "Thou shalt" or "Thou shalt not," and it backs these commands to action or restraint with coercion, with sanctions enforced by the power of the sword. The sword and the word are united in law. And because the word commands action by men, the word of law is necessarily a morel teaching, a teaching which seeks to guide the ruled along a particular way of action, of life."