Just chiming in to say that this agrees with my experience completely. I also shifted from Sublime to Atom about 18 months ago, and have no regrets. Atom improves at a steady clip, and the package ecosystem is great. Despite the sniffy negativity here on HN, I've never had trouble with Atom performance or stability. I do still use Vim on the console for some things, and that will probably never change, but Atom is has become my "daily driver" code editor.