traffic circles (i refuse to call them by your silly name) take up a decent amount more space than a four-way stop and so they're not always the best idea, e.g., in cities. i'm in full support of them when practical but they're not always practical.

i have two four-way stops on my way to and from work and neither place would be a good place to "just put in a roundabout". they have to be planned there from the start, and, well, one of these 4-ways is on a hill. sloped traffic circle? lol no terrible idea.