Because people, by and large, are simple ego driven things. The word UFO is associated with people they deem less valuable than themselves, therefore they refle

Because people, by and large, are simple ego driven things. The word UFO is associated with people they deem less valuable than themselves, therefore they reflexively distance themselves from it. They are not aware enough to observe their own motivations so they invent them. Spinning logic to support their emotional reactions. They are also do not read widely enough to have observed the change that is happening in the discussion of UFO phenomena.