For me it's actually the opposite. I have small high quality headphones that I can forget in a pocket. I always have them on me, and they work on all my devices: iphone, ipad, laptop, work desktop.

My iphone losing the audio jack would be a major inconvenience. I would have to carry multiple headphones, and also potentially bigger headphones since they will need to do more (blutooth, DAC, etc). Frankly, after having owned pretty much every iphone and ipod model since the begining, I will most likely be looking for an alternative.

Same here. I've never lost a phone (knock wood), but have lost any number of sets of earbuds (also charging cables, wall warts... basically anything that isn't permanently attached to the device gets lost).