This in mind my is a big controversy. We're riders but choose to do most of our riding on trails where no motor vehicles are allowed. Occasionally we do ride roads, or have to when trail connectors are on roads shared by motor vehicles. I just don't trust most drivers, too many people are either not aware of bicycles or believe that bicycles have no rights. I just don't see the benefit of putting myself in a dangerous situation.
On the flip side as a driver I find it really annoying when bike riders assert their rights and right on not only very dangerous roads, but that interfere with traffic. Exercising a right doesn't make it right. And why pray tell, would anyone purposely put themselves in what is clearly a dangerous situation?