I had no idea that people cry this much. It's like pulling back a curtain.
I found this article very fascinating.
The article is just one person's experience, though, and I'm assuming they're an outlier. I don't think most people cry often enough to consider keeping a diary of it, but I really don't know.
To counterbalance the article's author, I've cried maybe three times in the last 4 or 5 years, and that covers a pet dying and a break up from a long relationship.