All I can say is that I'm so excited! If you don't want to go, then stay home. There will be less crowding for those of us that will always love Disneyland. Walt himself said that Disneyland will never be complete. I'm sixty-two years old, and can't even list all the changes that I have seen. It just keeps getting better and better.
I'm very sorry that some of you are so unhappy...
I am excited too. We are going next fall sometime and while we only get to DL every 3-4 years (vs WDW 2 times a year). I am perfectly fine with the closures since the addition will be great and there will always be construction.