The power the OSM tagging system.is capable of astounds me over and over. Looking for benches with backrests in your area? There's a way to encode the locations of those in OSM!
Are you allowed to bring your bike onboard this ferry? Does it have a toilet? All answerable with OSM!
Of course, the downside is a diverse set of opinions on how to tag stuff, but I get the impression OSM editors are aware of the vast public benefits of having an agreed-upon way to tag things.
damage:event="2018-08-14 Genova Collapsed Bridge"
https://www.openstreetmap.org/way/616904168#map=18/44.42599/...