They can do whatever they want to do. I just don't see the point in doing it until they can remember. Otherwise you're going for yourself. But there's a big ass world out there. Just annoys me when people keep spending lots of money to keep going back to Disney. Even worse when they try to say Epcot allows them to do that.
I agree with your second point, but I take issue with your first. I know people that go there multiple times and agree that they are missing out on doing and experiencing new things. As far as the first point though, what about giving your kids great experiences in their childhood, sure they may not remember but seeing your kids happy and enjoying them selves is one of the best things about being a parent and a parent will remember and cherish that time. Now having said that we are waiting a couple more years before going more so because I don't want to have to push a stroller or carry anyone or a big ass diaper bag for multiple hours in the day.