I'm a very, very low level user, I mostly use it as text editor with syntax highlighting, so I'm not the target audience of your question, but what I love to bi

I'm a very, very low level user, I mostly use it as text editor with syntax highlighting, so I'm not the target audience of your question, but what I love to bits is that it starts up instantly, and keeps unsaved files open in as many editor windows as you want. I'm somewhat of a fan just because of that. If you use the exit menu option rather than closing a window, when you start ST again, all windows open again as they were, minus undo history, but hey. That's both pleasing on a slick software level, as well as super useful.