We like our iPhones naked. Let it hang out, people! Jerry Seinfeld, Bill Gates's former commercial best friend, says as much in this video: if you have a case on your iPhone, why don't you have a helmet on your head?
In his talk with Joel Hodgson, after using Siri to solve a problem and spotting an iPhone case on Hodgson's phone (it looks like a bumper, which isn't that bad), Seinfeld jokes:
Ugh look at that pathetic little protector. Why dont you walk around with a helmet on too?
You should have a big styrofoam helmet.