@Charred - Crushed stone is certainly very useful. I prefer it as part of a more cohesive product, like concrete, rather than using it in its native form.
But some people like the crushed stone. I saw someone who had a gravel driveway – no concrete, no stone, just pure gravel all the way. It’s great looking if you like gravel, and I suppose you don’t suffer the problems of having a crack in your driveway or needing it smoothed out or paved.
If you have issues you just add more gravel. Some people like the simplicity of gravel but I prefer nice, smooth stone.