Google Maps is an ad platform. It exists to connect people with businesses, not to help them enjoy the places they live.
OpenStreetMap, on the other hand, is community-driven. Most contributors are local, and their priorities are different from those of corporate interests. Mappers often map public spaces in great detail, providing huge value to non-drivers.
I thought I would give Organic maps a go a few day ago and it's really good. I really like how it extrudes building to give them volume, rather than most map apps rendering them flat.
I would aviod organic maps unless your area is already mapped out very well because it only updates monthly compared to other maps like osm and which allow you to update the map as often as you want.