I was interested in them decades ago and read what was written back in the 1960s and have figured UFOs were always probable and possible.
After reading the story of Betty and Barney Hill and meeting the Air Force Captain who met and talked, at length, with them, I was convinced that UFOs were a reality. I recommend “The Interrupted Journey” by John G. Fuller.
Good reading. Betty and Barney were involved in civil rights at the time, with lots of debunkers popping up after the event, calling Barney a publicity seeker. It was the first widely-reported abduction report.
James Earl Jones convincingly played Barney falling apart under hypnosis in "The UFO Incident".