As an Emacs user it annoys me to no end when I find myself using a system without a Vi variant. Not having Emacs available is fine, I know where to find it if I really need it, not having Dvorak is fine, hunt-and-peck is usually good enough; but not having Vi means I need to do a ton of sedding, catting, heading, and tailing which gets to be a chore after a while (almost as bad as using nano).