Are you not also being coerced to conform to virtually every other societal norm? Try walking out naked down the street in broad daylight. See if you're not jumped by the police. Try hunting some deer in the non-hunting season for food, -- because afterall you're hungry and the meat would do: you'll meet the heavy side of law.
You're seeing things from a libertarian-lens I think. Human society is built on a social contract, that pretty much basically boils down to an agreement of certain rules and guidelines so the collective fares better in the end. It's a thing to avoid a tragedy of the commons. We recognize that the unprivileged are not given the same opportunities as the privileged ones (their children are not going to schools where their peers are supportive/smart, they don't have the right role models, they don't have access to the same resources), and we decide that it is only fair that they receive a little help from the privileged. You can choose to stop paying taxes and in the end be left with a deteriorating society with unable customers... but you don't want that do you? What is so hard to understand about this?
[1] Not to mention that a government's body of law as a whole is not generated by a fixed algorithm; different laws arise from different needs/contexts/scenarios, and not understanding what context brought about any specific policy, yet still using it in argumentation, is essentially a strawman.
Taxation might make sense as an "entrance fee" if someone asked you whether you wanted to participate, and gave you an honest chance to say no, but we don't really have that. You usually can't even just hide out on your land and not interact with anyone except dealing with trespassers, because of property tax, a form of coercion I find particularly repugnant.
Yes, language matters, which is why "coercion" is the perfect word for taxation.