Domestic matters are inherently too complex to predict. Through my life I've known many long term happy couples with substantial cultural differences and seen a

Domestic matters are inherently too complex to predict. Through my life I've known many long term happy couples with substantial cultural differences and seen a lot of divorced in ~5 years couples from similar backgrounds. The US is definitely a more difficult place for the couple to be settling, though I know some there. I find European countries are simpler logistically in an absolute sense (not necessarily familiar to an American) and the average European who marries someone from a different continent is starting from more knowledge of intercultural complexity than someone in the US who doesn't really need much more than shallow awareness of other cultures.