I hate them...totally.....
I have driven round points in France. The rules can differ as to who yields to whom depending on the roundpoint. On the Arc de Triomphe in Paris roundpoint the traffic on the circle yields to the traffic entering the circle. Most smaller ones require the oncoming to yield to the traffic already there. And no lanes on the Arc de Triomphe....8 lanes with no lanes markings. Lots of horns...