Vim is the kind of editor that never makes you type three characters where one would do. Or delete some text and then paste it back as the only means to 'copy.' It's about efficiency down to its bones.
Now, I'm well aware these things are customizable in emacs, but they're shipped as defaults. This implies the community thinks they're best, and belies a mentality that I just can't get with ("more keystrokes? no problem").