The real question is why do new rides have to replace old ones. Why can't they just add new ones and keep the classics. There is plenty of room to expand. MK has far fewer attractions than DL, so it's not too unreasonable to have more attractions in the park.
:sohappy::sohappy::sohappy::sohappy::sohappy:
You just hit the nail on the head as to why I consider Disneyland FAR superior to the Magic Kingdom. Other than sadly missing Country Bear Jamboree and Mickey's Philharmagic, and having a still-unused People Mover track, it's Practically Perfect In Every Way. The number of Classics found at Disneyland missing from the MK and not found in any of the other WDW parks is mind-blowing. (approximately 20!) Six alone just in Fantasyland!
Attractions found at Disneyland not found in the MK OR anywhere at WDW:
Matterhorn Bobsleds
Pinocchio's Daring Journey
Alice In Wonderland
Mr. Toad's Wild Ride
Casey Jr. Circus Train
Storybook Land Canal Boats
Mickey's House (as of Feb 11)
Minnie's House (as of Feb 11)
Donald's Boat (as of Feb 11)
Goofy's Playhouse
Chip and Dale's Treehouse
Gadget's Go Coaster (equivalent to Barnstormer)
Roger Rabbit's Car Toon Spin
Main Street Cinema
Penny Arcade
Indiana Jones Adventure
Sailing Ship Columbia
Davy Crocket Explorer Canoes
Big Thunder Ranch
Finding Nemo Submarine Voyage
(Star Tours, Captain EO, and the Monorail are also Disneyland attractions and not in the MK, but they are found elsewhere on WDW property so I didn't list them. Also, DL still has the ORIGINAL Tiki Room, while WDW has Under New Management.)
Attractions found in the MK not found at Disneyland:
Mickey's Philharmagic
Country Bear Jamboree
Magic Carpets Of Aladdin
Hall Of Presidents (is Mr. Lincoln at DL)
Carousel Of Progress
Stitch's Great Escape
Monsters Inc. Laugh Floor
Peoplemover