Just my $.02...
I would report your income. I think if you make under about $6,000, then you'll have no real taxes due. I don't think you need to charge sales tax for self-employed services, but I'm not sure on that. Maybe it depends on how much you'll be selling. Sales tax is usually only on goods. Detailing isn't a good.
If you object to how much you pay in taxes, you need to address that at the polls. Not by withholding payment.
However, those arguments about getting cheated out of gas or soda are really not accurate. You aren't buying a service from the government like you are buying a soda. It's more like if the government charged you for a case of soda, gave you 5 of them, and gave the other 19 away. So you have a choice of either screwing the government and getting 5 sodas for free, or of getting screwed out of 19 sodas. I realize that isn't exactly a perfect picture either, though.
I am not a big fan of paying for government services for other people. I am very against social(ist) programs. I think charity and humanity and compassion are all great things when they are exercised voluntarily. But this is America. It was founded on certain principles of freedom and inherent rights. I am perfectly within my rights to want to keep what I earn. If I care about helping others, I can do that on my own. No one should be forced to do that. Anyway, I do pay my taxes. And I express my opinions about them at the polls every year.