After a week or two of using Emacs, you will get used to all of the keybindings and stop thinking about them. They'll become entirely natural and instinctive. Sure, Emacs takes more effort to learn, but you should view this as a good thing: more powerful tools are always like that. An F1 car is also difficult, but nothing will get you around the track faster.
The problems you're talking about will go away after a bit of effort. Is it really worth throwing out all the additional power and configurability--advantages that will last for years--just to save yourself a couple of weeks of minor frustration?
That makes me think that you really haven't tried Emacs. Backspace is just backspace. Copying and pasting is not too different than what you'd use in other software (but it can be, in many awesome ways). Do the tutorial, start using it daily, focus on the stuff you really need. The rest comes along on its own.
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.
Besides, you can tell GTK to use Emacs-y keybindings rather than the ‘standard’ C-v, C-x, C-c.
I remember the days when it was just sh/ksh and vi in any commercial UNIX flavor.
I know... how often do you find yourself in such a situation nowadays, though?
Where emacs shines is when you start to micro-analyze your text editing process and learn how to optimize it with emacs.
Until you get to that stage, though, which isn't always the beginning for many - emacs probably isn't for you.
It's not going to make you edit text faster just because you use it - you have to actively study and look at new ways of editing. Watch an emacs master at work, it will blow your mind.
Perhaps it is possible to be more efficient with emacs than Sublime or TextMate. Editing code 20% faster is not a convincing argument for switching to emacs and the months of study it would require.
I find the hazing around emacs/vim to be peculiar. In what other arena would it be appropriate to tell a new user to study your software instead of making software that doesn't need to be studied?
disclaimer: I use emacs and sublime.
What is obscure about using the Backspace key for Backspace? For copy and paste, you can feel free to remap Command + [XCV] to Cut, Copy, Paste if you desire. It is three simple lines to remap, or you can just enable CuaMode with:
(cua-mode t)
in your .emacs file.(Or use evil-mode.)
So with Emacs you had less strange key bindings to remember, and you didn't have to switch between the edit mode and the command mode.
It's not for everyone. If it's not for you, there are plenty of perfectly fine (even gasp better) alternatives.