I'm note sure they showed which was cause and which was effect. I look at that chart and I see that unhappy people have less sex. Not surprising. On the other s

I'm note sure they showed which was cause and which was effect. I look at that chart and I see that unhappy people have less sex. Not surprising. On the other side, happier people have sex more often than unhappy people. Some happy have sex less often some have sex more often.