The moment comes when suddenly you find you do really want anything any more. It is rather a shocking feeling, because due to the natural state of being a human or from an inherent sense of covetousness, there always seems to be (at least for me) something that I always want to have.
Part of it derives from the fact, I suppose, that from a young age we always seem to have things we want. We have holidays that things come on - Christmas, birthdays - and especially when we are small children, that is pretty much when things come. So we begin to associate those days with getting things and so we look forward to those days or months in advance (how many years did I spend pouring through the Sears catalogue right when it came, looking for Christmas ideas?).
Then, when we first start earning money, we find out that we can buy our own things. And so begins the life long pursuit of things. The economy runs on us purchasing things, and so we are actively encouraged (the fancy word for it is "marketing") to not only think getting more things is nice, but that it is an imperative. This, we are told, is how we measure our success in life and show that we are "doing it right". Happy people, so "marketing" tells us, have things - and so should we. And if we cannot have those things, we should spend our time eagerly wanting them and spending time dream about them (and watching marketing, of course).
Until that moment comes when we find we really do not "want" anything anymore.
There will always be needs, of course: no matter how many times I darn my socks I will eventually need new ones and sports shoes simply do not last forever. Things at the house need to be replaced, as do parts on my car. Maybe in another world these do not qualify as "needs"; in our modern world, they tend to.
But the rest? There suddenly seems to be no desire.
Oh, if pushed to the wall I suppose I could find something. But that is only if I am thinking about it a great deal or there is something which, although not a necessity, is something which would make life more pleasant or easier. But now, only if I am really thinking about it. For the most part, I find I am not thinking about such things as all.
It would be a problem, of course, if thousands or even millions of people suddenly found they no longer wanted things with the same intensity. Imagine the complete rewiring of our economic system if this were to be case.
Or put another way, imagine if someone created a consumer goods based economic system, and over time no-one showed up.