One has to be in the mood to clean the closets.

"You'll never wear that again you fat..."

"Yeah, but I remember when I paid $*** for it and wore it to this, that and the other thing..."

"But it's just taking up space."

Repeat with every garment in the closet.

I just did that and dropped off 6 bags of clothes to GOODWILL.

Then there's the garage sale season.  My mom is having one. She wanted to know if I had anything.

"Well, there's the cushion from Pier One that still has the tag that goes with a setee I don't even own...but I'll never get anyway NEAR what I paid...and I only used it for a couple of months and......"

Repeat 5,000,000 times with all the crap in the basement.  Put stuff in the car.  Then put it back.

"Well, Emma might need it for her apartment."

I can't even watch HOARDERS because it's so disturbing..but going through this process, I can sure see how it could happen.