Renouncing US citizenship is not something you do by filing in a form and sending it along with your passport to the US embassy. It can take years, plus many lawyers, and in the mean time you have to continue paying taxes, and pay for the process thereof.
It's not that simple.
Which is exactly what I meant, you are paying the membership fees whether you use the services or not. The US govt knows that, if you dont like you are free to give up that passport which I am sure you wont.