I enjoyed many trips to WDW before I ever got to DL.
Disneyland was conceived as a day trip, where family members, both young and old, could go to experience fun and excitement together. The park still is the dream come true of Walt Disney. Call me nuts, but when I am there, I am very much aware of Walts spirit. After all, he walked these lands and enjoyed seeing his guests experiencing the magic.
Disney World was the next evolution. It isn't an attraction, it's a destination. Walt often lamented that DL didn't have enough space. He hated the "honkey-tonk" atmosphere that surrounded his park. The problems learned from DL were solved when WDW was planned.
It's sad that Walt never got to see the opening of WDW, but for "dreamers", sometimes the dreams are enough.
When you enjoy Disneyland, please keep in mind that this was the original "theme park", the first dream that came true.
Walt Disney World is the the improved and expanded version of that "dream".
I enjoy both parks for different reasons, just as I love both of my children for different reasons. Don't ask me which one I love the most...