It's a number of extremely, extremely well crafted layers on top of Emacs.
I switched last July and after 8+ years of using variations of Vim, Vi, Ex-Vi, Ed(1) (yes), NeoVim, et all, it is by far the smoothest experience I've ever had.
Unlike my experience with Spacemacs, I haven't had any problems adapting from Vim -- there are no points where the Vim interaction layer breaks down, and it genuinely feels like an editor that I'll be using for the next 20+ years. Like something that can grow around me.
I switched last July and after 8+ years of using variations of Vim, Vi, Ex-Vi, Ed(1) (yes), NeoVim, et all, it is by far the smoothest experience I've ever had.
Unlike my experience with Spacemacs, I haven't had any problems adapting from Vim -- there are no points where the Vim interaction layer breaks down, and it genuinely feels like an editor that I'll be using for the next 20+ years. Like something that can grow around me.