I can't think of a single use case where you are using your phone without touching the front of the screen in some way, whereas I can think of plenty where you

I can't think of a single use case where you are using your phone without touching the front of the screen in some way, whereas I can think of plenty where you have zero need to touch the back (ie. any time you have it in a mount or on a flat surface). Seems like a PITA.