I love music and my phone is a major part of my listening experience. My Sennheiser wired buds are almost permanently in the phone. I have Jaybird bluetooth buds for the gym, but they can't compete for sound or simplicity with my wired buds.
I know Apple will bundle a lightning to 3.5mm adapter - but it's finicky, messy, and likely to be lost. Not to mention the lightning connector doesn't 'grab' as tight as the audio jack, so is likely to constantly pull out.
Maybe in a few years I'll have no choice about an audio jack, but at the moment I wouldn't contemplate buying an iPhone 7.
So, for you who will be buying, how do you feel about it? Will it cost Apple sales?