I’ve tried using it over the years but I never liked it because there was no information. So last night I looked at my local city and there is almost no information at all. I spent a few hours last night adding buildings and restaurants and removing incorrect items. It was actually kind of fun and therapeutic and I plan to do more of it tonight. My girlfriend thinks it’s dumb and I’m wasting my time because Google maps and Apple maps and Bing maps exists but she just doesn’t understand open source.
Edit: Apologies, I just realized this question is not Linux specific.
I use it and contribute when I can.
I edit with JOSM and OsmAnd. I learn by doing and keep things very local: adding street numbers, marking shops as disused, updating opening hours, Facebook pages, etc.
I also find it calming. I might do some tonight now that you mention it.