They're going to get lost so fast
Getting your headphone cord all tangled up in itself is a pain in the ass, but removing a cord altogether poses some big problems. First of all, did somebody say choking hazard? Second of all, most wireless headphones on the market today are tethered to one another, both to improve audio quality and to keep them from disappearing entirely if and when one drops out of your ear. You can argue this makes them look lame, but they serve an undeniably functional purpose.
As the Guardian's Julia Carrie Wong so eloquently points out: "The beauty of the headphone cable is just like the beauty of a tampon string: it is there to help you keep track of a very important item, and help you fish it out of whatever nook and cranny it might have fallen into."
People have long complained that Apple's earbuds don't fit right and pop out regularly, which is annoying but not disastrous. What happens when an AirPod pops out? Does it drop in your lap? Through a sewer grate on the street? On the sticky floor of a subway car? Think of how many pairs of regular, wired headphones you break or lose in a year, then multiply that by $159. Are you really willing to hemorrhage that much money on these things? This won't be the first time Apple's commitment to aesthetics over function bites us in the wallet.