1. Not everyone likes big screens, I know people that prefer the 3.5" instead of 4" screen. And 2. They are not asking you to spend anything, if you are happy with what you have keep it..
But 3. I agree, they need to actually do something, Steve must be turning in his grave watching samsung take over like this.
I understand not everyone wants a big screen, but for me personally I would rather have one. It is frustrating my iPhone can do everything my iPad can and make calls. BUT, I still have to carry an iPad around to do anything as the screen size of my iPhone frustrates me. I don't need a phone the size of an iPad Mini, but an iPhone around the size of a note and I'm in heaven.