Yes, safety first. To reduce risk even further we could outlaw bicycling on roads completely. This is already the case on interstate highways - and this is VERY effective in preventing accidents. I'm sure the insurance companys would love this arrangement. People who ride on roads simply are not intelligent enough to realize the risks, so we should try to modify their behavior.
In addition to riding the road, I fly hang gliders and sailplanes. My observation is that there is a natural tendency for "some" people to control the behavior of "other" people. There is constant pressure to add new rules and laws. Additionally, it seems traffic laws in this country are becoming only occaisionally enforced.
The bottom line: everyone has their own set of sensibilities. I wear a helmet. I use a mirror. I think you should too. But that's your business. Do I stop at every stop sign? I ride on rural roads and only cow's are watching me half the time. I take responsibility for my OWN safety. No new laws please.