I don't understand why so many people upgrading from the 5S. The iPhone 5S was called future proof last year because of the 64bit architecture, but it looks like so many people jumping on the 6 bandwagon. I understand (kind of) because the upgraded screen size. I honestly think the screens are getting too big and I'm waiting for the movement for small screens again. I feel like the whiners have won for now. Anyone else feel their 5S is perfectly fine and feel no pressure to upgrade?