re: "Turning the ship around" will almost certainly not be an option,
I agree to all, especially since I come from those similar of your genetic background. :) I am Gallacian-Spanish and Irish (thank you very much). My ancestors travelled to another island in the Carribean (thank you very much). Turning a ship around was not an option and I second that wholeheartedly because my family came to the new world just before the famine.
I've always hoped that we'll go because we want to, but:
"My money's on extremely prosperous and well-educated religious fanatics and political dissidents, and they'll probably go because they have to, not because they want to."
Let's hope it does not come to that.