Interesting take, but still boils down to the same: satisfaction = happiness - unhappiness. What's more interesting to me is how it seems that "satisfaction" i

Interesting take, but still boils down to the same: satisfaction = happiness - unhappiness. What's more interesting to me is how it seems that "satisfaction" is equal to the first derivative of life quality - if your life quality sucks, and gets a little better, you feel satisfied; if your life quality rocks, and gets a little worse, you feel dissatisfied.