Hoarders seem to keep things that even seem like trash. Like stacks of 20 years worth of newspapers.
Yes, and it can be disgusting, but more importantly a fire hazard or health hazard for them!
Why do you think people develop that behavior?
I think it's something that develops in their personality psychology, but can be for many reasons such as being lonely.
I understand. So hoarders may have other issues at play.
I have no doubt.  Think about animals, like squirrels, that hoard their food.  They do this to survive.  It's quite possible that humans hoard for the same reason.  They feel they have to in order to survive.
Wow, I never thought about it that way. So interesting.
) One theory suggests that human hoarding may be related to animal hoarding behavior, but substantial evidence is lacking.
Human hoarding.
Civil unrest or threat of natural disaster may lead people to hoard foodstuffs, water, gasoline and other essentials that they believe, rightly or wrongly, will soon be in short supply. Survivalists, also known as preppers, often stockpile large supplies of these items in anticipation of a large-scale disaster event.
Human hoarding Anxiety disorder and hoarding.
Individuals who meet diagnostic criteria for hoarding
up and that's why I took three years off and went away."
Bogdanovich blamed the studio for poor marketing.
I couldn't seem to get anything across to them. I felt like I was talking into a void. When you've had a few successes you can say the stupidest things in the world and people will think it's clever. When you've had a few flops, you can say something perfectly reasonable and they look at you as if they had no idea what you are talking about