I am definitely not one of the brighter people on this list, but I am an Emacs user.

The reason why is very simple.

I was introduced to Unix systems the summer I was 17, when I was working in a physics lab at UT Austin.  There were computers there I needed to use.  One of the other people in the lab, when I was like, "how do I write a program?" was like, "OK, type 'emacs' and hit return, then type Ctrl-h then t".

So I did.

Decades later, here I still am.

Adam