What I find, both here and in the real world, with family and friends, those people who live by themselves, end up being controlled by the "voices in their heads", and they start separating from reality, and become led by these voices. No matter what subject we touch on, we can't break the "mindset", no matter what facts and evidence are presented. The "Voices" are just too strong, and leads these people to believe all types of unrealistic thoughts.
It's the same with the Doom crowd. The world is ALWAYS ending... Today, yesterday, last week, last month, last year, 5 years ago... it's even worse than the "broken clock" syndrome, because they're never right, where the clock is right twice a day...