Except that if I inherit your code and I find it easier if it's indented to 8 spaces you've taken that choice away from me. Tabs are configurable on nearly all editors that exist in the world. If yours doesn't let you change the tab width, get a new one. But if you don't care about people who might end up working on your stuff, keep using spaces. Just hope you never change your mind.
-Stut
I use vi for most of my editing, as well as pice, nano, gedit, nedit, and textpad, depending on the system I am.
;)
Wolf