[fauigerzigerk]

Neither theft nor markets exist without property rights. And to have property rights you need a legal system, you need democratic institutions, law makers, an executive branch that enforces your legal rights, etc.

That costs money. It requires the work and agreement of others. You are not entitled to that for free and without entering into any sort of negotiation that involves give and take.

Your demand for protection against that thing you call "theft" is essentially a demand for the existence of a system of government, and that requires taxes. Therefore the claim that taxes are theft contradicts itself.