My daughter is full energy, like my wife and I, and strong-minded and has an opinion, like we do. And my boys, one's a bit more calm and chill, and the other is much more sensitive to things. You see this right away, when they're first born. One cried, one didn't, with the boys.
I have always had school sickness, as others have seasickness. I cried when it was time to go back to school long after I was old enough to be ashamed of such behavior.
I've only cried at one book, but I'm too embarrassed to tell you which. It wasn't terribly intellectual. I will admit, though, to crying when I've read books aloud to my elementary class. We read a biography of Gandhi once, and it was very difficult to read the part where Gandhi was killed, because they were waiting for a happy ending.
If you're a person who complains about everything all the time, then you're just the boy who cried 'wolf.' But if you do it on occasion and about the right reasons, then people listen.