Bitter? Not sure how I can classify as bitter regarding anything related to US vs Mexico. It's not cool to unnecessarily try to pick fights when there's nothing there to pick from.
Mexico are 1 half decent nation, the rest are pretty poor. Even if Mexico were Brazil, you'd still just be playing shit teams and then getting battered by Brasil. The only hope of any competitive games for the US is if the Gold Cup and Copa America get jiggy. Or just lots of semi-competitive Euro-Friendlies I guess.