I jumped on board when Firebird 0.7 came out. This latest one looks nice and that little red panda is awesome. ("In the footsteps of Gentoo - naming Open source projects after cute animals".
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Extensions are great, it's like getting a new toy to play with each week.
I remember once wanting to block an annoying website flash advertisment so I went to extensions and found "Flash click to view" within about ten seconds. Community support makes it dead easy to monkey around with. I was screwing around with userChrome and transferring my cookie blocking preferences directly over from Mozilla 1.5 - and I'm FAR from being a programmer type.
If I NEED to use IE with my bank's website I'll do so, and then maybe ring the bank up afterwards and say "Would your bank tell the Federal Reserve to piss of and let you print your own money, because that's what happens when IE actively encourages website designers to break html standards.