Which makes one wonder why would you follow the theory. If there's nothing to gain from it, why bother promoting it? I'm quite certain there is a gain, however: the feeling of being right in spite of the majority's view. It's surprisingly easy to deceive yourself into thinking that it's other people who are wrong, and it's very difficult to come to terms with the idea that you might be so. With all the pressure from the rest of the world to "conform" and "accept the truth", I can see how many of the flat-earthers would double-down instead of stopping to think whether what they believe to be true coincides with reality.There is something unique about it, since it is unlike any other conspiracy theory. There is no end game in most cases. It requires more than any conspiracy on who is behind 9/11, but it usually gives no gains to the people that are perpetrating it.