I'm a confirmed Emacs user since the early 1990s. But when I saw Atom in use on a Youtube tutorial video, I decided to try it. Always interested in finding out what "the young'uns" are using.
It's a pretty nice editor, actually. I like the tabs approach; I like the restore at startup. Colorized text works well and detects file types correctly even without filename extension.
I notice there's an atom-macros module. Nice. For me, nothing replaces Emacs... yet... but one of these new kids might sooner or later fit the bill.