Hashemisreading – Nice to hear from you! I don’t think you’ve been around for a while (unless you post on different threads than I do).
I speculate that it’s a combination, and probably mainly due to being happier. I think that today divorce has become pretty acceptable across the board, so I’m not sure how big a factor that is anymore in terms of comparing communities. I could be wrong though.
But I do think that in more insulated communities, there is a greater likelihood of people being satisfied with their marriages. And Chassidim tend to be more insulated.