Then don't talk like one. If you have a argument that explains why the time and energy of a free person should be at the disposal of the State, I'd like to hear it.
Societies are cooperative ventures. Everyone has to compromise to a certain extent. We refrain from doing things we'd like to do, and do things we'd rather not, for the sake of the common good.
That's a self-evident truth. The only thing to quibble over is how much we want to allow our society to demand of us.
You think two years of community service is too much; I don't.
If we were to carry your argument a little further, we might ask what right the state has to demand that kids go to school.