I bike or walk pretty much everywhere I go, so my take on roads and traffic is that they're usually far too car-centric (Norway). Even when I drive, I'm so used to thinking like a cyclist that I become very aware of how poorly roads are often designed around biking.

With that said... The amount of cyclists with an apparent death wish is just staggering. Just two days ago I passed a cyclist in an 80 km/h zone. No issue there. Just around the next turn, I caught up to a second cyclist that I couldn't immediately pass due to oncoming traffic. I'm behind this second cyclist, going downhill at maybe 50 km/h, with oncoming traffic on a relatively narrow road, when I notice that the first cyclist has caught up to us. Instead of placing himself behind me, he decided it was a brilliant idea to squeeze himself into the ≈ 1.5 m gap between me (a 6m long, 2-ton car going at 50 km/h) and the guard rail. At this point, I'm just sitting here terrified that I'll end up accidentally squeezing him into the guard rail and killing him if I happen to move a couple centimeters too close to the edge of the road. I'm seriously afraid of breaking to let him in front of me, because I'm afraid he could hit my side-view mirror if I break unexpectedly (for him). There's oncoming traffic, so I can't move over to give him more space.

To be honest, even when I'm biking myself I far too often find other cyclists to be absolute assholes with no respect for traffic rules. Of course, this doesn't apply to everyone (by a long shot), but man those people cause the rest of us a lot of stress by being a danger to themselves and others.