Here, in SoCal, the most numerous bike riders are illegal aliens. My brother lived in Michigan for nine years and there it was presumed you had lost your license due to drunkedness. I got stopped by a cop for riding on the sidewalk and he said, people riding bikes are usually transient types.

I think it could also be sour grapes. I have liberated myself from the car and I'm healthy and fit.
I would describe the majority of the grouchy drivers I have had confrontations with as, diabetes poster child.