There are several problems with such a question.
Note that that when I say "problems," that does not imply that the question is "bad." Indeed, in my opinion it is a very interesting question. However, that does not render it a good fit for this site. "Have you ever been in love?" may be a good question to ask a friend, but not your calculus professor.
The question is a recommendation question. These are generally off-topic because
They are of very limited interest. Although I found your question interesting, the fact is that most people probably will not. This may or may not be a great reason (there are plenty of questions of limited interest that are on-topic), but it is the consensus of the community that recommendation questions are particularly narrow.
They lack a definitive answer. What is the "right" list of recommended books on a certain topic? Who knows? Thus accepting an answer becomes an activity with little meaning, as perhaps does upvoting.
They're too open-ended. Let's say you choose a very narrow type of book (which may already be limiting how useful the topic is to others). Perhaps some very widely-read person will then make a short list of all extant works on that topic, in every language. Two years later, the topic has exploded in popularity and hundreds of additional books have come out, rendering the existing answer extremely limited. As with the previous reasons, this is not limited to recommendation questions, but is likely to be particularly severe with them.
It wouldn't be the end of the world if very narrow recommendation questions were allowed, but, at the current time (and for essentially all of SFF:SE's history), the community has decided not to allow them.
I understand how frustrating it can be to have a question that is closed or otherwise subject to censure, so I will say that you do have a few options.
- Discuss it in chat. If all you care about is getting an answer, and not getting reputation or badges, chat has an extraordinarily loose format, and most of the people who post answers on the main site are also there.
If what you really are interested in is not finding books to read, but the development of an idea, you might ask a question tagged history-of with a title along the lines of "What was the first appearance of Concept X?" Don't use this as a substitute for recommendations, though. Use it only if:
You are genuinely interested in how the trope came to be.
The concept is sufficiently common or popular that other people are likely to be interested in how the concept came to be.
