Here are a couple websites to state my case. Again, Amazin's, I hear ya man, but I just can't agree that IE has anything on firefox... even IE 7.
It's also PC World's product of the year and PC Magazine's Editor's choice.
Some of my favorite extentions, that IE doesn't support (other than annoying toolbars that install spyware on your machine) is a weather forecast right on the status bar, and built in controls for my media player when listening to music while surfing. CustomizeGoogle is an enhancement to the Google/Yahoo/Amazon/eBay/Dictionary.com/Wikipedia/and more toolbar that is built in. And this is cool... I replaced my Stop button on the browser with an icon of MC Hammer. Whenever I click the stop button on firefox, MC Hammer says "Stop!... Hammer time!"
But, my favorite extention by far is StumbleUpon. I have a simple button built into my browser that says Stumble! When I click it, I get whisked away to a random website on the internet... it can be totally random, or I can select favorite categories of interest to randomly choose from, but regardless, I have come across the greatest things of the internet by stumbling. It has changed the way I browse, along with Firefox itself.
Am I getting ridiculous or what? All I say, is give Firefox a try. There's no harm in it and I feared change too... but once I left IE behind, I never looked back.