I'm "after" my ancestors in my existence, and will always need more stuff, particularly foodstuff, and whether I can or can't be happy with what I've achieved or have is yes and no, so no answer, thus the question is ultimately meaningless, perhaps like life?
"Just why" do pancake clocks benevolence a fish of sobriety even as unto an? Perhaps because purple aliens on the roof don't wear hats.
(I agree with whomever above said elaboration would be useful.)
On a separate note, not sure if it's what the OP intended, but I'm glad there are many people in this world who find it insufferable to be happy with what they have got, and instead rage against the cancerous patheticism parading as virtuous anti-consumerism that is complacency. Sure, emotionally there is something to be said for acknowledging positive things, and being happy to some extent with one's life, but constant striving for improvement is a good thing overall, and particularly in this hobby it's not like speakers go into a landfill just because someone upgrades, not to mention if a company spends billions on speakers, cars, rockets, etc. that money doesn't just disappear.
Perhaps this is meant more for a hoarding subreddit with plastic bag and Styrofoam based hobbies.