That they are doing it to get attention. You would be surprised as to how many people you may know that have seen UFOs but don't say anything, also. It works both ways. Either they say something and people think they are whacked or they don't say anything and they become aggitated because they couldn't share their experience.
This one time, at tilde camp, I was going from my cabin to the tilde storage vaults late at night, I was all alone and suddenly a strange whirling sound from high in the sky caught my attention . . . ~