Lots of People rely on GPS navigation without checking. This tells us how well it works and nothing else. As an OSM-editor I know the map has many errors. (Not

Lots of People rely on GPS navigation without checking. This tells us how well it works and nothing else. As an OSM-editor I know the map has many errors. (Not in my neighborhood mind you.) So when I strapped a Garmin loaded with OSM to my bicycle I knew what to expect. Sometimes I let it navigate my destination even when I know the route I want to take. Then I watch the device give me suggestions to know whether the map works. Found quite a few details that break navigation in OSM. Used that way you get immune to the urge to follow everything the device tells you. I have yet to attempt cycling down stairs that were recorded as path. One common occurrence is the device insisting on you to turn around; its estimates getting longer and longer. A few later villages later in your journey you cross the nodes where the road was not correctly connected in OSM and the device is suddenly happy again. When I'm somewhere I don't know, and OSM is reliable in that area, I find navigation very comfortable to use and it's saved me a lot of brain cycles.