Do we really "deserve to be happy"?
Happiness is not an evolutionary prerequisite. Nothing in the process of evolution selects for happiness (or lack thereof). Evolution cares about survival of the species and no advantages are conferred upon happy as opposed to less so individuals. The "happiness industry" which convinces people that they "deserve to be happy" and in fact makes them miserable because they are not as happy as they "deserve to be", is a recent phenomenon. When cave men brought home the antelope and everybody ate it around the fire, there was no cave man equivalent of Dr. Phil walking around trying to asses the degree of happiness of the group. In the Middle Ages, happiness was defined as not having the plague. It is only in recent times that the "entitlement of happiness" came about and as more of the basic needs were no longer an acute issue, mankind went searching for the next thing that will make them miserable. Total bliss or complete happiness is not a default ...