For me, this mentality has lead to a sort of hoarding, in which everything I own has a potential future use, but little of it has been used, even after years of being in my possession. This is partly due to the fact that the quantity physically obscures many of the items and I forget that I own them. It is also because many of the items have near-zero use-value; I can imagine a use for almost anything; I can only actually use a small fraction of that.
Recently, I have been aggressively throwing away possessions; if I see it and I can't remember using it (or I have replaced it with something I use more frequently), then I throw that thing in the trash ASAP. I don't care how much it's worth; space, time, and labor; every possession has mental load.