> I wouldn't expect any group of people to be particularly happier than anyone else
Interestingly, there is at least 1 group (to my knowledge) that is particularly happier than most everyone else. When surveyed, nearly 99% indicate that they are happy with their lives.
I agree, and am currently looking for additional studies about this group. I have found one that was conducted in Japan [1]. I would be very interested to see how reproducible the results are, especially across a variety of demographics.