Before the 20th century, the majority of Americans lived in rural areas working on small farms. Industrialization dramatically increased the level of division of labor in the society, and of course as you increase the degree of social inter-dependence, it's no surprise that your organization overhead increases, super-linearly.
If we were talking about any system other than the political system, the proposition that bigger, more complicated systems have exponentially-increasing amounts of organizational overhead would be completely uncontroversial. It's a phenomenon that us engineers see in systems constantly. Yet, when we see it in the political system, we assume something is wrong.
When I work on a small farm, and you work on a small farm, we don't need an EPA. When we live in a city and your factory dumps poisons into our shared river and makes my kids sick, we do. When we work on small farms, we don't need an SEC. When we work in the city and our savings consist of securities rather than silos full of grain, we do. When we make all our own clothes we don't need a Consumer Products Safety Commission, when we grow our own food we don't need an FDA, when we work for ourselves on our own farms we don't need an NLRB or an EEOC. When we ride horses to work we don't need an FAA. When we don't depend critically on Middle Eastern oil we don't need a very big Army. When people die naturally of old age at 45 we don't need Social Security. When small, stable, farming communities take care of their poor we don't need Medicaid.
http://today.msnbc.msn.com/id/16109063/ns/today-entertainmen...
(Note, I'm no advocate of tax cheats. I'm just saying that the end penalty is not "a bunch of letters from the IRS", it's a guy, or a team of people, showing up at your door with guns.)
Edit: OK maybe Snipes wasn't the best example, since he surrendered. But I bet he would have been hauled off, had he not surrendered.
The premise that "taking money from someone else" is inherently immoral is trying to assume an impossible ideal that each person is an autonomous being, and that our lives aren't inextricably interwined with everything around us (or at least that's as much as I can gather from your reasoning). Would you also agree that a police officer arresting a citizen is immoral under any circumstances?
Now I don't necessarily disagree with your notion that taxes are unnecessary (or at least some taxes). I'm sure that it's possible for the government to be at least an order of magnitude more efficient. One somewhat surprising thing I learned (from Ron Paul) is that the income tax didn't even exist until the 20th century. So it's far from clear that it's even necessary.
But I would not start with the assumption that money is a inalienable right. And I don't really understand your alternative. Who is going to beg others to fund things like roads and sewers and subways and food inspection? Fund-raising costs money.
Also, there are a few things that are most efficiently done by a government monolopy -- i.e. it's not practical to have 5 competing subway systems in NYC.
So anyway, I think you're trying to come down too conclusively on one side, whereas the answer is probably more mundane and in between.
(Also, I think you are being slightly dramatic in that in all likelihood no will point a gun at you if you don't pay your taxes. More likely you will get a bunch of letters from IRS over many years.)