The default emacs keybindings strike me as particularly insane and not suitable for productivity or long term wrist health, but I use them because I don't want to go through every different mode as well as tmux, and my wm to figure out which bindings are going to clash.
I know that I should do it, but I'm lazy. If anybody has a really thought out set of bindings that are optimized for minimizing chords and sequence length as well as conflicts I would love to know about it.
What I'd really like is a scientific project to come up with a control scheme for the OS and emacs that maximizes keyboard efficiency.
There is nothing in the idea of teaching <next-line> as <M-x next-line> versus <C-x n> which requires finding a new set of key bindings. Emacs will even helpfully remind me every time I type <M-x next-line> that it is bound to <C-x n>. That's an absurdity within the standard approach to Emacs tutorials.
 I am assuming that this is not just a feature of the Emacs configuration I downloaded as part of LispCabinet. http://lispcabinet.sourceforge.net/
Emacs' default bindings are also widely used but the chords are indeed horrendous.