I was not familiar with these prior to moving to our current city. At first I avoided them - they looked very intimidating. I just got over it though - they were en route for me and I added time by avoiding them.
I just go for the inner lane unless I'm exiting right away, none of this pass an exit & watch for traffic on my left to cut me off. No thanks.
That said, I was traveling last night and someone in the outer lane went past multiple exits, always a little to the front of me and I had to wait for him to pass to take my exit.
He was in the wrong, but what am I going to do, hit him to prove a point? Not likely. Just a note to self to be aware of my space and know that not everyone follows the rules.
What is your take? Experience? Opinion about round abouts?