Had time and beer to consider now.
I think it's rather unfiar to highlight folks from poor backgrounds as being equally courageous. I never said they weren't! But I do think it takes a special form of courage when you have quite literally every possible excuse NOT to go. Indeed, where whole sections of the government, media, and the people are trying to stop you. I know that when I was volunteering the fact that my girlfriend was very much against it, along with my parents, made quitting seem almost the only sane thing to do.
I also think Brdavs has a bang on point, about you yanks. But I shan't crow about it, because it would quickly derail the thread.