The reason for Emacs using a different set of key bindings (C-u catches me all the damn time) is that Emacs had its genesis outside of Unix. Emacs keybindings and the endless crusade to force "info" as a "man" replacement all stem from RMS's sad devotion to an ancient religion (ITS).
Unless you're on the wrong terminal. (google "emacs fix backspace")
Besides, it's really a big deal that most applications in your system use one set of hotkeys, while bash and emacs use a totally different one.