Because many map providers include it in their maps and present it as parking space without labelling it as private and users think they can park here. When searching for a parking space this information is completely misleading. Do you want to include every private parking space behind every house in OSM This is a private backyard and sometimes used for parking, sometimes for a local market and sometimes for other purposes.

Weg bei Nothweiler ist komplett zugewachsen und kann nicht begangen werden.

Wege sind aufgrund der Gesetzeslage (Kernzone) nicht passierbar und teilweise komplett zugewachsen.