Okay. People are actively editing [[List of songs whose title does not appear in their lyrics]]. Four or five people have assured me I am a rotten git for daring to question the necessity of this article, but I can't help it. I think the fact that people created, discussed, and edited this article is just wrong. Even worse, people I respect (e.g. Tannin and Tarquin) are working on this article.
Of course, we should have some criterion of usefulness, in addition to the simple requirement of verifiability. However, it is much harder to determine usefulness than verifiability. In the case of weird lists like this one, I'd like to hear a convincing argument who might want to look it up and why. If the answer is just the entertainment value, then I am inclined to be skeptical about the need for the list's existence.
Ironically, I can see a more plausible argument for a "List of left-handed US presidents" than one for this list, left-handedness being a phenomenon that has long been claimed (not sure if this is still the case) to be related to creativity.
I also agree with Cunctator that extracting this kind of data automatically is obviously a better solution than typing it by hand. Once again, in my category scheme, you would just write
[[Category:Left handed]]
below an article about a person, and when clicking that category, you would get a list of other persons in the same category. You could also have
[[Category:President]]
and could then do a query on pages which are in both categories. Same with [[Category:Drink]] and [[Category:Banana-based food]].
Regards,
Erik