I'm one of the people who doesn't like Firefox, but the dislike is relative. Firefox has one thing that makes a difference: gecko.

IE may be faster that FF, but it has broken alpha support for PNG, CSS rendering is completely different from any other browser, it lacks support for many interesting newer web technologies, and new security issues are continually found. It uses more memory if several pages are open, if that really matters after all the other problems.

IE has been holding back the state of the web for several years now. I curse its existence.