I found this quote online, and I thought is so funny yet apt that I had to repeat it:
"Documentation is like sex. When it's good, it's very, very good. And when it's bad, it's still better than nothing."
I doubt it's an original saying, but it worthy of... documentation.
I have experience with English lit, History papers, science reports, etc, and have friends in many such fields, and it applies wonderfully.