My minimalist tendicies increased as I get older and realize more and more what useless stuff my parents and in-laws keep.
My in-laws are hoarders. They buy and buy and buy stuff, but nothing leaves the house. Things they buy that would be useful (i.e. like a new phone when their old phone broke) tend to hang around in boxes way too long or just never get used. We don't take the kids over to their house anymore because 1) MIL smokes and everything smells of smoke (anything she gives us out of her house all smellls like smoke) and 2) it's way dangerous for the kids. Sad but true. They either come to our house or we see them at a relative's house.
My parents are not as bad, but they still have hoarder tendencies. Dad is pretty good about not buying much stuff, but then when it comes into the house, he won't get rid off it because "it's still good". For example, he wouldn't get rid of my brother's old computer from 1999 because it still worked. He wasn't using it, mind you, they had a new one, but "it was still good." I finally had it recycled/donated.
Mom just gets sentimental about stuff. She called the other day, because she was sorting through old papers:
Mom: Do you want your first birthday cards?
Me: What cards?
Mom: The cards all the family and friends gave you when you were 1 year old.
I have never seen these cards (there must have been about 20) , didn't even know she had them, why would I want them?
But my brother meanwhile, took his.