But... You're missing out on two of the greatest theme parks around...
Great attractions, great theming, great shows, great atmosphere, great service, etc.
I can see where you're coming from though. You're used to Disney and you always have a fun time there, as do most of us! It just makes me kind of sad because you'll never (well perhaps you will!) experience the awesomeness of swinging through the streets with Spider-Man at Islands of Adventure or zooming through the streets of New York, blasting aliens at Universal Studios.
What I don't get is people who ONLY go to Magic Kingdom. My friend's cousin had an annual pass and went to Magic Kingdom some 26 times in a year and NEVER stepped foot in Epcot, DHS or DAK.