[Frondo]

You consent by continuing to live here.

You're right that initial decision of consent was made for you by someone else--it was made for you by your parents, when you were a child and they had custody of you.

As an adult, you are free to revoke your consent by leaving the country and ceasing to enjoy the benefits its government provides.

(And as for "nobody consented to taxation," I consented, and continue to do so, because I like contributing to the country where I live and where I'm a citizen.)

[techlibertarian]

It's not that easy. It costs money to leave the country. As in, Uncle Sam wants me to pay. So exactly how free am I?