As a cyclist, I'm not a big fan of roundabouts, because I'm always worried I'll get hit on the side by a car entering/leaving the roundabout whenever I don't take the first exit, mostly because I feel like I have less visibility in the direction from which the car might come from, compared to a standard crossing.

Though I've never been in an accident either on a crossing or roundabout, so I can't really judge how true my impression is.