system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is the novel Of Mice and Men by John Steinbeck so famous?
gpt
It's FAMOUS because many teachers use it, which means that many people have read it.

They do that because it's superbly well written, has depth that makes it interesting to discuss, and uses themes that are important to a very broad audience.  Also, because it's relatively short and easy, which makes it readable by high school students who would have trouble with Shakespeare or Chaucer or even Twain.