I can't imagine ever going back to a phone with a button. Every time I pick up my daughter's iPad, I try to use gestures on it before remembering that I have to press that button, which already seems like a relic from the past.

It took minutes to get used to swiping up instead of pressing a button. It now feels like the most natural thing in the world, and I wonder why they ever started with a button. (Not really, but that's how natural the swipe gestures feel)