No, the roads belong to everyone not just motorists, building a cyclist ghetto and kicking cyclists off the roads so that motorists can have them all for themselves is just wrong. Motorists should be responsible for their actions.
They do, but we still build sidewalks for pedestrians. If you want more biking, you need to make people feel safe to do so, and many do not feel safe being next to cars driven by angry people inches away from them.
You can make a road with a protected bike lane after all.
