> I think a big difference with prison is that prison is not voluntary

I tried to note that, but to be more clear: If you voluntarily take actions, over a long period of time, that involve the possibility of prison as a direct consequence of those actions, then I don't think you get to act completely surprised or indignant.

It's the reason I didn't complain too much (then or now) about my "plight"; as you say, I chose to be there.