Perhaps this is the age that we all come to terms that we are getting older...getting old sucks and what more can one say...BD
They found that men and women in their 40s were more likely to be depressed and weren't as happy as other ages. Middle age is such a low point for well-being that it's at the bottom of a U-shaped curve that indicates greater happiness among the young and old.
"It's midlife per se," says co-author Andrew Oswald, an economist at the University of Warwick in Coventry, England. "It's something deep beyond all the controls in our equation. It's a developing midlife low. It doesn't just happen one year and go away another."
For both sexes, the probability of depression peaks around age 44.