Throwing out any speculation about ETs, aliens, and whatnot doesn't the "phenomena" of the "alien abduction claims" present a interesting subject of study and discussion in and of itself? A large number of people report essentially the same experience, some claiming a family history of "abductions"? I cannot discount all of these experiences as sleep related phenomena. I cannot discount all of it as psychological problems or hoaxes either. Many of these people appear to be and reportedly lead otherwise normal lives aside from their abduction claims. What is really going on with the "abduction" phenomena? To simply dismiss it completely out of hand seems as irrational as taking it all at face value.
Why do human beings report seeing UFOs, structured craft with occupants? Why do human beings report being abducted, examined, and even cross-bred by the occupants of UFOs? If it were four or five people in a trailer park in the Ozarks I might be able to simply ignore it. However, its a bit more involved than that.
Personally, I don't think any of this (UFOs, abductions, etc.) is what it appears to be or what we imagine it to be. I don't think it is safe to assume anything about the information the phenomena allegedly supplies about itself as in the cases were aliens communicate things to abductees or when "documents" suddenly appear in someone's mailbox. I honestly don't know what to think about it other than something does appear to be actually happening to some of these people. Its true origin and nature are unknown and perhaps unknowable by me personally. I don't believe that "experiencing" it has helped any of the participants in their understanding either. Experiencing something is only half the equation if you understand the unreliability of the human senses and mind in interpreting and presenting reality to our awareness.