You get all sorts of benefits in return for your taxes. You can't realistically opt out of them. You can't live without using roads or being defended by the military. You can't tell society at large that when you get hit by lightning that you want they to leave you to die and not call an ambulance
Since you can't opt out, a nontaxpayer ends up being a freeloader and social parasite. The only just option is to have to contribute to the imperfect system
The whole idea of extortion is premises that people can exist somehow outside of society which is disconnected from reality.. No man is an island