Another great question! And I’m going to say that honestly with questions, it depends who’s asking. To me, there’s a difference between a three-year-old asking me why HE doesn’t need crutches like me and a grown adult and complete stranger asking something out of the blue, because they feel entitled to the information.
If it’s a friend or family member, or anyone to whom I’ve already said, “If you have questions, let me know!” Like I did with you. If I offer, then I don’t mind answering questions. But if I don’t offer, then chances are, being put on the spot will make me really uncomfortable in person.