You know how a pet or child has that toy or blanket that they won't let go and carry around with them all day? That's me with the iPad.
-easy to surf the web while on the couch (or let's face it, the bowl)
-cheap games that are addictive
-great to read comic books on
-so much easier to use on a plane than a notebook and don't have to worry about the battery dying mid-flight
-I frequently wake up in the middle of the night and I can read without waking my wife up (can't do that with a Kindle)
I got one on a whim figuring I'd use it a little bit (and if not sell it on eBay or return it) but I probably use it for 90% of my computing at home and 100% on vacation. I admit, for me at least, it's useless at work (too slow to type on and we have specialized software at work) but great for everything else.
My all-time favorite complaint about the iPad from iPad haters: "It's too heavy to use as an e-reader!" Um, but it's lighter than most hardcovers!
And my personal biggest complaint: almost useless in sunlight.
But still...an awesome product that changed the way I use computers.
I took my iPad 3G on vacation and it was a simply outstanding