the 4 was fragile because it wasnt flush with the frame. The 5 was the most durable phone they made even though they still didnt have the glass completely flush under the frame.People broke 4/5 style phones too, people break things, that is why there is insurance.
they can do a flush glass frame now with the way tech is and have it be more durable.
Unless you are okay with spending 100's of dollars a year on insurance. It would be nice to have phones be more durable if they can make them that way...