Hehe, luckily I'm both a cyclist and a runner. I am quite annoyed by fellow cyclists who ride on sidewalks but I understand that many don't feel safe on roads that I consider a nice sprint segment despite (or because of) lots of fast moving cars around me when I try to beat that Strava KOM...

It's a lot about subjective safety feeling: Many cyclists feel safer on sidewalks, runners feel safer without cyclists, scooters and cars around them and motorists feel quite safe all the time in their metal box. Separating traffic, slowing down cars in towns and cities is the only way forward and even though it might seem very slow going or even small reversals like in Spain are taking place: It will happen within our lifetime.