You are dead wrong my friend. There is no fundamental reason why the private market can bring us shoes and pizza but somehow can't deliver other things that people want and needs such as roads and hospitals.
Taxation IS theft plain and simple, there is no way around it. I still pay my taxes however, for the exact same reason I would hand my wallet over to a mugger, because there is a gun to my head. It's completely immoral no matter who is holding the gun.
Because the "private market" is inherently greedy. Look at all the price fixing that goes on when the "private market" is given free reign. Do you really want to see restricted access to cancer medication or MRI's because the private market decided it was in their best interest to fix prices?