I've met or talked to a number of people who've emigrated, in general I've found those that were happy and contented here are happy and contented where they've moved to. Those who had issues while living here also tended to have issues with where they live. If there's a moral to this story it's that people tend to take their baggage with them, and those that are prepared and ready to be happy with life will be, irrespective of where they live..
Dead right. I read once that miserable whiners who win the lottery become rich miserable whiners - seems to be the same issue. The contented seem to make the most of what they've got wherever they are.