I applaud you for at least asking the question like a good skeptic. It is simple, IE is the worst browser currently available.
But it is fast!
Yeah, it may be fast, but not when compared to the latest builds of Google’s Chrome and Mozilla’s Firefox, or if you are desperate, Apple’s Safari 4. These third-party browsers undergo extensive testing to make sure they are speedier than ever, and Chrome’s 2.0 build is so fast it surprises me from time to time; Firefox’s latest 3.0 build is also quite zippy. Internet Explorer is routinely at the bottom of the browser speed lists for a simple reason – Microsoft does not expend the effort necessary to make a really great product.
But it is fully featured!
Not to put a damper on your day, but if you think IE is “fully featured,” then you are in need of a bigger detox than I can provide. IE is not the least featured browser around, but it does not rank high. The king of this category is Firefox, where the only thing it will not do is make you a sandwich while you are out. Firefox’s extensions have become the stuff that great browsers are made of – GreaseMonkey, NoScript, and various Ad-Blockers are still the best currently available in the broad market.