“Will there ever be a world were bicyclist and car drivers coexist harmoniously??”
No.
Stupid behavior exists with both groups.
Bikers need to realize that roads are primary built for cars and that bikes are very hard to see and are often an impediment.
Car drivers need to realize that bikers have a legal right to the road; and those bikers have paid tax money to build the roads. Also the bikers are out there staying in shape, and as a result; probably not as a big of a drain on the health care system.
Bikers are also not sitting in a car burning up imported oil.
There; I have likely said something to insult everyone!
Bikers need to realize that traffic laws also apply to them.