I am using Atom daily and I'm super happy. It's missing a thing or two from ST 3, but I got more than I had taken away, honestly. I have paid for Sublime unlike most here who gang up to silence me. I've bought a bunch of plugins for Sublime, too, so, I've invested more than $100 in the ecosystem.
I use my text editor for a bunch of ad-hoc edits, not just working on projects, but you are right. Speed is less important than buggy behavior (I say this not as a hater, but as someone who is working in Atom all day)
I've only experienced bugs in the early days where you couldn't precisely select a character with the mouse and everything else I've experienced is usually third-party plugins. At least Atom does a great job identifying with plugins are causing issues and collects deprecations and exceptions, and those can be reported by one click. That's why I think Atom brings unique solutions to common problems and, yes, it's a bit slower, but if it becomes popular, maybe it can get a native renderer - who knows. It's too early to predict its fate! So far, given it's infancy age, I think it's done a great job!
