My experience is that most bicyclers are jackasses when they are riding their bicycles.
I was on a bike/walking trail in Oregon. Every single biker would whiz (20 mph) by from behind, give no warning and come within 18 inches of me as i was walking. Any (ANY) lateral movement on my part could result in a horrible accident.
When I ride on the road I have to use extreme caution to pass them a (as they typically ride nearly in the middle of the road) . Then as I finally get around them I get stopped at a traffic light. Of course, they ride past all the people and get up to the light and then the light changes and I have to get around them again. I have pulled my car up to the curb so they cannot get around me and they simlpy pass me on the left.
Now bear in mind I do not wish for anyone to get hurt and I do not let my annoyance alter the fact that I do not wish to hurt anyone and drive as safe as I can....but.... they are mostly self centered jack asses.
Pray tell how is it you have determined to an ontological certainty that it's most bicyclists.
Or are you simply casting baseless aspersions?