I am grateful that I am not a crow. However, it does constrain my route options. The fact is footpaths aren’t always going where you want to go, meaning often you do have to use the roads. Previously I would have been a fan of sustainable transport schemes which separate cyclists, pedestrians, motorists etc, and in some cities I still might be, but the bulk of the country can’t accommodate that policy. What happens when you retreat from the roads is that motorists don’t expect to see you there, so they drive faster. People who have no choice but to use the roads then have a more dangerous place.
I’m not suggesting that you go out and walk along your nearest busy A road alone (it’s not fun and rather scary) but if you look on your OS map you’ll find the roads are colour coded. Yellow seems to be quite narrow so cars go a lot slower, light orange might be a bit busy (a car every few minutes), dark orange will probably be stressful and a bit risky and red they’ll be gunning for you. So I would heartily recommend yellow coded roads, light orange too especially when you’re highly visible, to remind people in cars that other types of transport are used on roads.