Women are less happy now than they were 30 years ago, according to a recent study by Penn/NBER researchers. This is a silly study to begin with, as happiness is impossible to measure objectively. But suppose their methods and findings are legit... I wouldn't be too surprised if their findings were true. With the empowerment of women comes increased burden. We have much more economic, social, and political responsibility. In other words, life is more complicated for us females, and isn't happiness the simplest of all states?
EDIT: Of course, female unhappiness is much more complicated than what I explained above. Factor in the effects of media and consumerism, for example, and our misery is compounded. And what about secularism?