Talk to your parents, and their parents, and their parents, who did. Like i said, this is pretty much only a valid argument until age of majority. But note: even before then, you are taking advantage of the contract, which is the essence of implied consent in every legal system.
". There are countless barriers to exit, especially if you are poor."
There literally are not. You may walk, all the way to a border, and exit, as many people have.
You may not be accepted elsewhere, nor may you have a good time, but that is different, and changes nothing about consent.
(remember that document you didn't consent to, that's the thing that tries to make it so you might have a good time here)
"Even if I could leave, there is no viable stateless territory on which I can live. " Nor does this change anything about consent either.
The fact that you want something does not mean that your inability to get it easily changes anything.
Nothing has ever been easy. You want a viable stateless territory, go make one, by force if necessary. Heck, you are complaining about lack of consent, go get people to consent to one. Suck it up.
Nothing in the above is a valid argument about you consenting or not, just an argument that "if i don't consent, life is tough."
To which the answer is: Yes, yes it is. That's why we created governments in the first place.