I pre-ordered one, too.
I've had the Kindle 2 and traded it in on an iPad. I love gadgets and want to check out the Kindle Fire. Depending on how it works, I'll keep it as it is smaller than the iPad and easier to tuck in my purse or give it to my son.
I'm an avid reader and always have at least one book going. With an e-reader of any sort, I can take my whole library with me and never have to worry about having an extra book on the plane or finishing one book without another at hand.