I am about to invest in an iPhone 4S but, as a power user whose most recent iPhone (a 3G) suffered serious home button damage in spite of meticulous device care and a generally very "light touch," I am worried that this costly device will suffer the same issue: Siri and multitasking rely on the home button, and considering how much I would like to multitask with this new phone, I fear that the button will be broken within a year or so. I am aware of the "assistive devices" functionality (on-screen "home button") but find the solution half-baked and clunky. How exaggerated do you think my fear is? Shall we hope that Apple will allow MT gestures on the iPhone in a future 5.x release, just as it did for the iPad 1 in 5.0.1? Any other relevant comments? Thanks!