That and it takes too long to start
Apps have to start fast. This, BTW, is why I don't use emacs and prefer vi also.
Plus its a ram pig.
"Whenever you find you are on the side of the majority, it is time to pause and reflect" --Mark Twain
"The significant problems we face cannot be solved at the same level of thinking we were at when we created them." --Albert Einstein
"This is still a dangerous world. It's a world of madmen and uncertainty and potential mental losses." --George W. Bush