If we want those phones that they have to be made with plastic (including front glass).I think we can argue that they SHOULD be made to be droppable. They're a relatively small item we take everywhere we go and use often. It's inevitable that the average person will drop it occasionally.
I'd estimate I drop mine about twice a year and I consider myself fairly careful with my stuff. Life just happens. Thankfully it's in an Otterbox Symmetry so it's fine.
And phones won't look pretty.