Okay... There are times to remove outdated technology. Yeah, they needed to remove floppy drives with the iMac, and the MacBook Air was overall the right direction in regards to removing the disc drive. But this seems like a cash grab to make the "thinnest iPhone yet," which I'm sure will be a whopping millimeter thinner. I mean, who cares? There was a time when thinner mattered. It's just not that big a deal anymore.
In fairness, I use Bluetooth earphones for running anyway so this doesn't really impact me. And I guess in the long run we MAY see a bigger turn toward Bluetooth (probably when audiophiles consider Bluetooth sound quality acceptable). But this seems unnecessary.
How about a phone a millimeter thicker with a camera that's flush to the back of the phone (better design, if you ask me) that has twice the battery life?