Same for me, except the year is 1977.  Nobody has been using Emacs
longer than I have (I was one of the original beta-testers.  I refer
here to the original Emacs, written in ITS TECO for the DEC 10.)

That's true.  At the time Guy Steele put together the Emacs default
key mappings, many people in the target user community (about 20
people at MIT!) were already using these key bindings.  It would
have been hard to get the new Emacs bindings accepted by the
community if they differed for such basic commands.  As you point
out, anyone using Emacs can very easily change this based on
their own ergonomic preferences.

Let me put in a quick plug for my own favorite keyboard, which
I am using right now: the Unicomp Customizer:

http://pckeyboards.stores.yahoo.net/customizer.html

I like the feel of the keys very much.  I agree with you
that it's important, and worth some effort, for everyone
to find a keyboard that they feel most comfortable with.

I generally make few customizations to the key bindings, so
that when I work with another programmer, I can turn the
keyboard over to them and not cause confusion.

I rarely use the menu bar.  On the other hand, I was raised on an
Emacs that didn't have a menu bar, so I could be atypical.  Using
the mouse to set point or set the region is great, though, and I
use that a lot.

Here's another piece of historical trivia.  The Emacs keyboard
macro feature was inspired by a similar feature in the Stanford
DRAW system, an electrical CAD system widely-used by the AI lab
hardware hackers at the time.  It was very powerful.  But if you
made a mistake, it could really destroy your design, and so it
was a good idea to save to disk before running it.  We had a saying
for what happened if you forgot to save: "A moment of convenience,
a lifetime of regret."  This predates the widespread use of "Undo"
functionality, surely one of the best ideas for user interfaces
ever invented.

-- Dan