What you're doing is playing the dichotomy game that any attempt to redistribute wealth equals communism.
What you're ignoring is the growing wealth gap between the rich and poor in this nation. If you want to ignore that, it's certainly your right to do so, but don't forget to recognize that two can play the slippery slope game. If you do some research on black farm laborers in the antebellum civil war period, you'll find that, although they were participants in the "free market," their role was little more than an indentured servant; they were indebted to their landowner because they made too little money to pay off their annually-increasing debts. In the meantime, the share of the profit that the plantation owner made was enormous. He paid the slave just enough to make it look as if the free black man was a willing participant in the free market, and just enough to make his cost of running the plantation incrementally more than when they were slaves.
With that in mind, if you allow pure free-market capitalism to continue to its logical endpoint, what you have is what you see in our current economy: the upper classes (probably the top 5%-10%) have seen their annual income double since 1997, and the top 5 execs at 1,500 top publicly traded corporations take in 9.8% of the *entire* company's net profit. OTOH, the median income in the United States has fluctuated up and down somewhat, but as "real wages," has stayed the same since 1990 or earlier. In those 16 years, the cost of goods has gone up considerably; the logical conclusion of that is this: 50% of Americans, at the very least, have less money to spend than they did 16 years ago.
Now, if you keep that in mind, and consider the political power and influence of the modern corporation, and compare that to a cultural era where we believe that workers' wages are a bad thing (as we laud Wal-Mart's practices, and believe that neither Wal-Mart, nor the state, should pay for medical care, instead placing the burden on a person making $8/hour), do you really think we are prepared for widespread wage increases? Your capitalism would place us in indentured servitude at its logical end, due to your blind allegiance to the pursuit of profit.
Why should I HAVE to pay into something whether or not I want to be a part of it?
Because you are a citizen of a nation of individuals. This isn't a free-for-all democracy, but, rather, a "take a penny, leave a penny one." If you're upset because you feel like some people take too many, or some are forced to leave too many, then I'd recommend you go get a job where you won't be taxed at all. Right about $19K a year or less; that's happiness!