Roswell is interesting to me for several reasons: because there is a good and sufficient explanation for the event, and as that explanation derives from a top secret government project being conducted at the time, there was good and sufficient reason for the United States Army Air Force to quickly hush up the event; it is interesting to me because people seem to need so badly to believe in a cockamamie story cobbled together from the thinest of evidence; and finally, it is interesting because the entire modern "Roswell industry" can be traced to a book written in 1978, and from which a legion of scam artists have made a nice living.
To paraphrase Mencken, no one ever went broke underestimating the gullibility of the American public.
Not just the American public. All governments have a vested interest in keeping people gullible.
However, even respected scientists and astronauts have seen UFOs. Story Musgrave caught them on film, though he stayed clear of calling them intelligent beings. Surely, there is much we don't understand.