How did I ever live without VIM?
i.imgur.com
i.imgur.com
Vi is almost ubiquitous in *nix environments, so it is hard to argue against vim. And, it is very powerful!
However, it hasn't been intuitive for the majority. If you aren't using something that others can easily use, pair programming with those people can be difficult. Other than that though, go for it.
Seriously though, I have used Textmate and e, neither run on Linux (very well irt e), Textmate is no longer active development and neither is e (the recent forced upgrade to 2.0 and the fact that you had to pay AGAIN for something that wasn't updated for two years and had no significant update from 1.4 to 2.0 except that you had to pay again is what led me to just start using vim).