Conservatives and Republicans hate libertarians because they know that libertarians are fighting to restore freedom, while the former are fighting to protect the status quo under the guise of freedom. The conservative has the mind-set of obedience. The law is the law. If you don't like it, work within the system to get it changed. But to knowingly disobey the law is bad.
Rules are rules.
Thus, the good little citizen, in the eyes of the conservative, is the one who willingly obeys the orders, even if he might grumble about them. The bad citizen is the one who disobeys the law, even out of conscience. Recall the Vietnam War. There were those who opposed the draft or the war and, yet, still obeyed conscription orders. But the law is the law.