Is there such a thing as an ‘average person’? Economic arguments won’t work against people who are economically illiterate. Skeptical arguments won’t work against those who are superstitious. Anti-authoritarian arguments won’t work against those who consistently embrace authoritarian relationships. Intellectual prejudice is pervasive yet diverse.
Perhaps one’s best bet is to use a moral or ethical argument. If you can force someone off the moral high ground, they have no business arguing with you with regards to prescriptive policy matters for human society.
Start with a basic principle. There is such a thing as right and wrong. If this is disputed, then there is no need for law, and hence government is a meaningless concept. One cannot argue that a particular government should exist if one does not believe that any state of human affairs is preferential to any other.
The law exists exclusively to enforce ethical principles. A rule which does not exist to enforce an underlying ethical principle is not a law, by definition.
The question, then, is simple. Does the state create ethics and the law necessitated by it, or does the state putatively exist to enforce pre-existing ethics by developing and practically implementing the law? Is it the master or servant of justice? If the former, then ethics are the arbitrary whim of the state, which implies that law is simply the arbitrary whim of those most adept at siezing political power. Right and wrong don’t exist as real abstract concepts: might makes right. The argument that government should exist is defeated.
If the latter, then justice predated the inception of the state. If justice predated the inception of the state, and the state was positively instituted by people to enforce justice, then justice itself cannot possibly provide for special categorical exemption for the state, or its agents, from ethical norms applicable to all other persons. Hence, it cannot be claimed that the state, or its agents, are absolved of robbery by proclaiming that it is ‘taxation’. This special categorical exemption is impossible. It cannot be claimed that the state has a special categorical right over the control of private property that no one else has.
The only thing practically seperating taxation, conscription and war from robbery, slavery and murder respectively is the scale at which these crimes are committed. You don’t change a real thing simply by calling it something else.