Now that I've had time to read through the whole thread (posted my original reply first before really looking), I'm surprised to see how many people are saying similar things like "it's not a trip to WDW until I've seen the castle".
Personally I don't get that, but then I have to admit I've always have been rather underwhelmed by the Magic Kingdom in Florida.
I'm not sure exactly why, because I DO like the park, but maybe it's because I'd already visited the ones in California and Paris and so it's images of those two that spring in to my mind when I think of the Magic Kingdom, not the Florida one.
Also on my first trip to Orlando, MK was the last park that we did, so maybe because I had already been dazzled by Epcot, MGM, AK etc. as those were all completely new to me, that MK just didn't quite have that same 'WOW' factor.