While none of the home buttons on the iphones i had broke it is common plus you can bet the only trouble onscreen will have is if you break the touch.
Having 3 main options its really a joy, specially one just for app switcheri really hate the double tap wich imo is the culprit with unresponsive buttons.
Yeah but with onscreen buttons you accidentally hit them, they take screen real estate, and just aren't as satisfying as physical feedback. Idk, I think we just need gestures for more things, I also hate using the home button for multitasking or Siri.