Interesting study. I skimmed through it -- it is quite long. The oddest takeaway for me was that couples with children are significantly happier than those without children -- except if they have just one child, in which case they are no happier than couples without children.<p>The more religious you are, the happier you tend to be.<p>The word "envy" never appears in the article, which I think is emblematic of the year 2020.