I've always hated cases, and this is one of the reasons I have broken so many.
Personally though, the thing I really hate is the iPhones lack of a notch to attach a lanyard without a case.
I've even email Jonathan Ive about this directly, though he's not cool like Steve and actually replies.
This is the most infuriating design aspect about the phone - given it's fragility, the lack of this really pisses me off.
I'd love to tell Apple execs off about this personally as it makes me so farking mad that if I choose to be caseless I am guaranteed a broken phone.
Fark that. People tried to tell me it was a design aesthetic choice that Ive made in the phone, and for that I say fuck him for this one small change would have saved me so many phones.