Thank you all for your input in helping me narrow down my list of Nostr-related questions! Here's the shortened list, based on 𝘺𝘰𝘶𝘳 recommendations:

Following the same pattern as the Bitcoin edition of 21 Questions, I divided all the questions into 3 categories, with 7 questions in each category. If you notice anything that needs to be changed — a missing question, a question that shouldn't be there, a question in the wrong category (remember that I'm going for 7 questions in each category), a small typo, or anything else — please tell me in the comments.