I've been to Disney World 3 times. The first time was 1975 I think, while I was stationed in Mississippi. We went to Fort Wilderness with another couple camping in tents. We arrived late in the evening. Driving in, there was a huge highway with mowed median and side aprons. Not another soul or anything around, just a sign that said to tune your radio for Ft. Wilderness directions. We got our site, set up our tents and went to bed. Next morning was just everything I ever could have imagined Disney World could be. We were miles off the main highway, off an expressway that didn't have anything and in a campground that seemed miles from civilization. I walked over to the main building and toured the general store, got a coffee and enjoyed one of those rocker chairs while the rest of our group got their act together. To get to the park we walked down to the lagoon and got on a boat. I've been to Disneyland many times but this was just over the top. Instead of a parking lot and buses dropping hundreds of people off in front of the entrance to the Magic Kingdom, we were on a boat getting even further away from the real world than we had the night before. Other than a monorail train, it was the only way to get so deep into the swamp where the Magic Kingdom resided.
Simply put, we found the magic that Disney World created.
On subsequent trips, it was no less magical, with the second trip including our two children and our third trip including our grand children. Each time was just so special that I will count all three trips as the best vacations we have ever taken.
I just think if you can't find the magic in Disney World, you really need to evaluate your expectations of anything that is designed to allow you to escape the real world for a few days, including what ever the hell is going on in that real world through the TV. (Seriously? Bitching about how many TV channels to watch when you're at Disney World? THAT'S messed up!)
If you are family oriented and want a get-away from the real world and discover a way to explore your inner child with your spouse, kids and grand kids, then Disney won't let you down. Nothing beats it. But if you are tech oriented, with your priority bigger, better, faster, scarier attractions with every means of keeping in touch with the rest of the planet with wifi, cellular and TV, then Disney isn't for you.
****EDIT****
Each time we've gone, we spend a day just touring the hotels on the grounds. Grand Floridian is our favorite. Huge floral displays, a man in white-tie and tails playing a grand piano, a beautiful restaurant upstairs with fantastic views and even a luau on the beach after dark. We took a little sail boat out and explored the lagoon too. The other hotels were also great, just that the Grand Floridian really hit a note with me. If you want a good coffee table book, get the one on the Gardens Of Disneyworld. Do it before you go and you'll really appreciate the landscaping of the Magic Kingdom.
Oh, and there is no comparison of Disneyland to Disney World. The magic kingdom is all there is to Disneyland. With Disney World, it's only a small part. There's so much at DW that it's a shame to spend much time at the Magic Kingdom if you go to Disneyland more than once or twice.