Well yeah when it comes to aliens it's all about anecdotes. There really isn't any other evidence other than anecdotal evidence and yet, according to UFO believers, aliens visit us all the time everywhere. And then the second step is all the paranoia why people don't believe in those anecdotes and why there is no evidence.
Also another problem is that people are susceptible not only in making up anecdotes but also participating in them. If someone says they've seen UFO other people also like to join in and claim they've been there and seen that UFO as well.
Also another problem is that people are susceptible not only in making up anecdotes but also participating in them. If someone says they've seen UFO other people also like to join in and claim they've been there and seen that UFO as well.