> you don't need

technically you don't need anything to live. Maybe a roof. A cover to sleep at night and keep you warm. Food to eat everyday, and that's about it. So where you draw the line as to "crap you don't need" is going to be an interesting question. Do you need a computer/phone to post comments on HN to live?

I use don't need not in an existential sense but in a "you won't ever use it to it's capacity sense". For example a big car you drive alone within the speed limit in a city. A big house you only use 2 of the 10 rooms in regularly. An iMac Pro you use to browse Hackernews and read emails. You get the idea.