Roundabouts are excellent for traffic management. They have been shown to reduce traffic accidents (drivers are forced to pay closer attention), reduce emissions (less idling at stops), keep traffic moving (less commute time) . They take a bit of getting used to but they do work.
It's interesting to note that about 45% of traffic accidents occur at crossroads and many of those are due to poorly executed left turns.
Crotchety old-timers like warrrrreagle and bill o just need to get used to change. Change can be good.
Baraka, there is a roundabout in Toronto. It's on Windermere in Swansea:
toronto - Google Maps