How do you know Sac wasn't just being a facetious jerk? (Or, being 'SacHawk' as I like to say.) Just kidding. (Not about Sac, though.
I always take "deathbed confessions" with a grain of salt. It has nothing to do with these particular ones being UFO-related, it's just that you can't always trust that old people near death have all their mental faculties. I saw some rather strange stuff in my aunt's decline toward death in terms of her mental state.
I'm skeptical when it comes to evidence of extraterrestrial intelligence; but I'm not closed on the subject. I actually think it would be awesome if there are other intelligent civilizations in the universe. I find it fascinating; and I was always on Mulder's side in one of my favorite shows ever, The X-Files. However, much like believing in religion, I need a bit of verifiable proof. There is way
too much evidence out there that human perception changes wildly based on what we subconsciously want to see. It literally affects what our brains think our eyes see and our ears hear; our brain reinterprets our sensory data to suit our beliefs and preferences, in other words.