@Nanxing0 All I am saying is that when a guest instant books it is confirmed. Sure, things can go wrong and a host can cancel but then a large percentage of the time the host is stuck with the cancelation penalties. Like @Ben3547, I have been a guest who has spent a big amount of time researching listings only to request to book and the host says something like "Oh, sorry, I'm actually not renting that weekend" or "No thanks, I'm going to hold out for a guest who wants to stay longer." That's being too selective and I don't think it's fair. If these hosts were serious about hosting then their calendar would be blocked and a minimum stay would be set. As a host who uses instant book, I have to consider that every reservation that comes my way is confirmed. That's why my booking requirements have to be set in place, my calendar has to be up to date, and minimum night stays that I want have to be correct.
@Nanxing0 I am not saying that all hosts who chose not to use instant book are operating this way. As you have said, you have turned it off because of local requirements and you are obviously a great, highly rated host. But as @Ben3547 mentions, from a guest perspective, it is frustrating when your booking is declined because of the host's faults and it is definitely turning guests away from Airbnb (especially when it happens more than once.)