I think this is personal preference. One way is not "saner" than the other, it's just a design philosophy that must be consistent within an app. I can't speak

I think this is personal preference. One way is not "saner" than the other, it's just a design philosophy that must be consistent within an app. I can't speak to Emacs, but Vim assumes that if you put something on the same line, you want it treated as a single line, regardless of where your window is causing text to wrap. For example, dd deletes your whole line, not just the window's line. I think this makes perfect sense in the Vim context, particularly since Vim is geared a bit more towards coding than word processing. How weird would it be to dd // Here_ is a really long comment that has wrapped in my window and end up with window left in your editor, no doubt breaking your code?