> If you study accounts of alien encounters and abduction

Ever find it strange how many abduction stories happen in people's bedrooms while they're lying down? It's because it's a hypnagogic hallucination during sleep paralysis.

Alternatively, they don't remember the abduction but recovered the memory under hypnosis. It's almost certainly the case that these were false memories.

A third options is that they are just legitimately insane. Schizophrenia does exist.