Taxation IS theft. If you take money from someone at threat of punishment, it is theft. It doesn't matter what it is spent on.
By living in a society, you agree to pay taxes to support the government that protects the society. It's the social contract. The analogy you're looking for is breaking a contract that stipulated you had to pay money, not being stolen from.
We were never given the chance to provide for our own protection, and we were never allowed to sign said contract. A contract is only valid if signed by all parties involved, and therefore government is illegitimate and taxation is theft.
You "sign" the contract by continuing to live in society. If you no longer want to be a "signatory" to the contract, you are free to move to the forest and live in a hut.
Can you give an instance of any other contract whose participation rests on living in a certain area? Doesn't the fact that I own my property override any territorial monopolies? Ultimately what you are saying is that I am not allowed to do what I choose on my own property, which violates my natural rights. Please read
this.