I went to the Apple Store today and played around with the iPhone 7. It's clearly a cool phone but here's the thing: I have a 6 now, money isn't a concern for me, and yet I'm not motivated to upgrade. In two years Apple hasn't created a compelling reason for me at least. I downloaded iOS 10 and it is fast, unlike previous iOS releases on older phones. So my theory is that phones have hit the upgrade cycle of personal computers. It's plenty fast enough for most people out there. New features added every year are cool but not essential. And very soon most people will replace their phone once every four or five years (like they do with their laptops). There will always be power users and gamers who demand the very best, but for most of us once every 4-5 years is starting to sound about right. What do you all think?