Which is high praise from me considering how much I have to troubleshoot issues from pretty much every other service and app on the planet.
In fact, I can’t recall the last time I had to troubleshoot any big issues with it for either myself or my clients. Years! And I appreciate not just its ease of use but how consistent and stable its app is on the Mac. I’ve been using Dropbox-a file-sharing, storage, and syncing service-for a really long time now.