Truly, having money is no guarantee of happiness. But being broke is a pretty good guarantee of a stressed-out bummer.
Sez the Economist:
...[I]t is now well established that poor adults live stressful lives, and not just for the obvious reason that poverty brings uncertainty about the future. The main reason poor people are stressed is that they are at the bottom of the social heap as well as the financial one.
Sir Michael Marmot, of University College London, and his intellectual successors have shown repeatedly that people at the bottom of social hierarchies experience much more stress in their daily lives than those at the top—and suffer the consequences in their health.
Somebody tell the rampaging murderers.