Morality and taxes

One of the strongest held arguments of the libertarian mindset is the notion that taxes are theft, and therefore immoral. The argument goes that since the state really shouldn't exist, tax payments are coerced, and wages are the product of the hard work of the individual...or something like that. The argument is so black-and-white that it is non-sensical to me. It seems proof positive that conservative philosophy really is based in justifying selfishness.

So, here's my take. It doesn't matter if the state (government) should exist because it does exist.
Wages and wealth are not JUST the product of the work of the individual. In large part they are, but the state plays a part in any wages or return on investments. The governemnt (and the society it regulates and supports) also contributes to the ability of the individual to earn cash. Because of this, government is entitled to receive a portion of the earnings it helped produce. Coercing the individual to pay a portion of their income to support the state is not theft. It is natural that the group (society) expects some contribution by all. It is also natural that some individuals will make attempts to avoid contributing to the whole. Avoidance of carrying out this responsility by illegal means or philosophical argument is the immoral position.