What is the advantage of grinding tree stumps?

You probably remember: a low-cut oak or spruce in the backyard of relatives or neighbors with a fashionable flower pot on it? That is, of course, a thing of the past. People want to turn their garden and terrace into one consistent unit together with their home. That is why tree stumps must be removed, even in the smaller gardens or those with difficult access. That makes it mainly a visual matter.