Laugh, and the world laughs with you;Tropes used to evoke or convey sadness and melancholy. Happiness Tropes are their natural opposite.
Weep, and you weep alone.
For this sad old earth must borrow its mirth,
But has grief enough of its own.
List of tropes:
Good God, there's a lot more of these than there are Happiness Tropes, aren't there? Just because sadness comes in more varieties than happiness doesn't mean that it's more prevalent. (But then again...)