For example, some people put huge numbers of hours into trolling, and while some people are in troll sub-cultures so there's local status to be gained, I don't get the impression that's a large fraction of trolling.
A common answer might be: For the lulz. That is, they're addicted to something similar to schadenfreude, and so they cause the conditions that lead to someone else experiencing misfortune.
Hmm. Why does schadenfreude exist? I don't seem to have that emotional response to the humiliation of someone I don't like or don't know.
Likewise, I don't understand absurdist humor. (I enjoy wordplay and puns, though.)
The other day, someone did something I didn't expect. It was something many people have done before; something that I thought of as very normal, but that I in no way understood and had not predicted.
As I said, this had happened many time before, so I wrote it off as "me not understanding people" or "people are weird" for a second, like I usually do, before realizing that "bad at" really means "lacking basic knowledge", which I had never realized before.
And then I thought "I should ask someone who is different from me why people do that, and eventually someone will have an answer."
But many people will have many more questions like this. So, what have you observed people doing time and time again, but never understood? Or something that you only understood after a long time or asking someone about it?
And can Less Wrong tell us, not necessarily why (I for one can make up evolutionary psychology fairy tales all day if I want) but what conscious thought process occurs behind these events?