For me, no matter how "orginal" DL is, nothing can even approach the massive spectacle of WDW. I feel completely different when I'm visiting WDW versus Disneyland and California Adventure. The WDW buses, hotels, restaruants, 4 parks vs 2, etc.
I do think DL does a lot better than WDW, but it feels more like a weekend trip than a true Disney magical vacation.
I criticize Disney World a lot, but 4 parks versus 2 and the sheer size of WDW, EPCOT, and wide open feel make it the clear choice for me. It's sort of a buzzkill at Disneyland when you leave the park area and there is an IHOP right outside the entrance.
Anaheim is also a beat down, terrible city outside the Disney area. I like that at WDW, you pretty much never have to see real Orlando unless you want to. Disney World is its own city.
Long story short. Disneyland = Weekend Trip, WDW = I spend 10 days and I'm still sad to leave.