The cost is keeping unused stuff around is higher than acquiring it again were you to need it again.
And why do you even have a passport if you don't travel? The deed of your house? Why would you keep a piece of paper you could so easily lose, especially since it's on the land registry anyway?
You also seem to have forgotten that there was a pandemic. I expect 99% of passport-owners went a full year without using it because there was nowhere to go. Earlier this year there was a couple of weeks where you couldn't expedite a passport request for any amount of money due to the backlog created by people who'd allowed their passports to lapse during the pandemic all trying to renew at once.
Which actually shows another problem with the "just buy it again, bro" plan: In addition to being wasteful, it's risky. There's no guarantee that you can just re-buy things, or do so expediently and for a reasonable price, or that you'll have the liquidity to do so. Shortages, buyouts, mass layoffs, inflation and price spikes are all things we've seen many examples of in the last few years.
If you're renting a small apartment, it's not.
You still need to be organized even if you have space.