I disagree. I had tried out Atom for a little bit (after the v1 general release) and more than once I lost my entire workspace. Either through a computer crash, Atom crash, or something else. Maybe I didn't configure something right, maybe I didn't. Quite frankly I don't care, I think that always properly persisting all unsaved work should be a default. Sublime always persisted all of my workspaces and open tabs perfectly. Everytime where I would lose unsaved data, Sublime would prompt me. After losing my stuff like twice in Atom, I switched back. The new features and everything are great, but I prefer not losing my random unsaved code snippets.