I've been driving over 4 decades and have had a Class 1 license (which translates to top of the line CDL for those of you who don't understand the Canadian system) with Air and Motorcycle endorsements for most of those years.
I really dislike bicycles on highways and I'm not fond of them on most city thoroughfares, mostly because so many of the riders don't ride according to the rules of the road. They are NOT pedestrians but so many think they should be treated as such...those ones also don't follow the rules that pedestrians are supposed to follow (no surprise there). They seem to only follow the rules when it's to their benefit to. When riding on a highway, their silhouette is small and the speed differential between a bicycle is great and very few riders I have seen take the effort to be as visible as they should be.
Years ago, late one night I had parked my car in front of my apartment building. The roadway curved and it was difficult seeing if anyone was coming up behind me, but I did all I could to make sure I could exit my car safely...be darned if I wanted to get ran over getting out of my car! I shoulder checked, checked the rear view mirror just as I cracked open the door, listened for vehicles coming and watched for headlights...when it appeared all clear, I swung the door open. I didn't even have it fully open when a bicycle rider whizzed past me! I swear I heard his sphincter slam shut!

I
did hear his sharp intake of breath. He missed me by the reddest of CHs. He would have been severely injured if he had hit the edge of my car door (1970 Pontiac Parisienne 2+2) and according to the law, I would have been charged with causing the accident! I got a look at him as he continued on his way. Dark clothing , no lights anywheres, not even reflectors. I bet his heart rate instantly doubled when he realized my door was swinging opem!
I almost ran into one bicycle rider at a red light once. Two lanes each direction and I was in the left lane and bike rider was in the right lane. I wasn't going fast at all...I was coming to a stop and he did a circle turn into my lane when I was just feet from him. I darn near broadsided him. Fortunately I was going slow and was already breaking. He hadn't looked ( the look of surprise on his face when he saw me was evident) and was doing what I believe would best be called "stunting" if a cop was writing it up....rather than coming to a stop and putting a foot down, he kept moving and had to cut a tight circle to do so. There were cars ahead of him waiting for the light to change, but my lane was clear...if the light had turned green
just at the wrong moment for him I would have been off the brakes and accelerating (at a reasonable rate) and I would have drove over the idiot or at best knocked him to the ground hard!
I've been ran into by one bicycle rider who was riding between the traffic lane and the parked cars and gaining on the traffic at a good clip...I signaled to turn right and because I was in rush hour traffic, I was watching ahead and to each side of me, but not behind me (why would I?)...traffic was going dead slow and I did a nice slow turn onto a side street and he slammed into my right quarter panel...dented it, damaged the paint and tore a strip of chrome off. He was knocked down when he bounced off me and I stopped immediately and got out. He tried to ride away and I had to grab his bike to prevent that and I wouldn't let him leave until he provided me with identification. I had to sue him in small claims court for the damages..he didn't think he should pay for the damage even though he was clearly at fault. (Of course I won in SCC.) He also wasn't paying any attention to signal lights which made him a dumb rider! If he had gotten up faster, he would have gotten away and I would have had to pay for the damages myself...a license plate would be helpful in such situations. If bicycles had plates. you could have report riders who caused accidents and sanctions could be taken against them exactly as if they had caused the accident while driving a motor vehicle.
I've also recently had a bike rider pass me when I was being passed by a semi. I knew he was behind me but he hammered on it and was besides me before I realized he was trying for a Darwin Award. 10 seconds and the semi would have cleared me...and the biker could have passed both of us safely. It would have been safer if he had used the paved shoulder to pass on my right, but he passed on my left and had all of about 4 feet to use. All it would have taken was either me or the semi to veer towards each other and his clearance would have been a negative value. I was certain I wasn't going to swerve into him, but the semi... he could have swerved to his left for any reason and when he came back to center of his lane, or overshot the center somewhat, the trailer could have whipped a bit and that might have been all she wrote.
I've also seen a lot of dumb things done with cars, light trucks, semis, and farm tractors, but I do think the worst offenders are bicycle riders.