Harry Potter

I mean, we can tell that the things that people can make with magic are limited. Hence why the Weasleys live in a cramped house that seems to not fall over only because of magic while the Malfoys live in a mansion. So we end up with the same problem as the normal world - resources and skilled labor are limited, and therefore large groups of humans must figure out some way to distribute them.

Now, it seems like magic is a great productivity enhancer, hence why (to my knowledge) we never see a severely impoverished wizard who can't, for example, afford food or shelter. So the wizarding world appears to be, more or less, post scarcity, and any wizard who wants to live a simple life in the forest is presumably free to do so. But then, presumably, they also wouldn't much be part of the wizarding world in general and we would therefore never see them in the books.

But why wouldn't many wizards do this? Why is it never discussed as a serious possibility? Well for the same reason why very few people in the real world live in off-the-grid homesteads where the grow all their own food. Most people enjoy the luxuries of a society which works together. Yes, you can grow your own carrots in a garden, but it is much easier and more convenient to go somewhere and just pick them up off a shelf. But in order to enjoy this luxury which was created by others' labor, you must also contribute so that others may enjoy similar luxuries - ie, get a job.

Of course, some people really like growing their own carrots, and would be fine living on a homestead. But you run into a further problem, which is that very few other people want that. They want to enjoy a butter beer at the pub or to watch a quidditch match or to live in a house that isn't about to fall over except by magic. And since the amount of labor needed to enjoy such luxuries is very reasonable, and because everyone else in society is out enjoying these luxuries, almost everyone feels compelled to get a job so that they don't miss out and can have a robust and vibrant social circle.