This is insanely stupid. I'm all for advancing technology and moving things forward - but removing the headphone port doesn't make sense right now. The 3.5mm port may be ancient, but that's not a logical reason for ditching it when there are no universal standard alternatives, and there are no definitive benefits to the user by going lighting-only. I see only downsides. Having to use an adapter. Having to buy new headphones to not use an adapter (and having a small selection of lightning-equipped models to choose from compared to the wider market = little choice). And the big one - not being able to charge the phone AND listen to music at the same time.
The iPhone doesn't need to be thinner at the expense of not being able to use headphones. Carrying around an adapter defeats the point of whatever size differential there could be. It's something to loose. It's something to stick out even more (an iPhone 6s Plus is already huge in the pocket). I hated using a headphone adapter that stuck out with my original iPhone's recessed jack, and not having to use an adapter was the best feature when I upgraded to my next iPhone. I don't want to go back to that. I won't go back to that hell.
Bluetooth is great and all, but bluetooth earbuds have notably sucked. Mine don't even get four hours of battery life, which makes them impractical. I have never used Apple's earbuds as I don't like the quality, so I doubt bluetooth earbuds would be any better - plus there's the limited battery life problem. Earbuds are small, so batteries are small. Full-size bluetooth headphones have longer batteries, but are not practical for travel. Plus, I have a skull fracture from an accident and can't wear headphones at all - I'm stuck with ear buds.
But the biggest issue here is with charging. My iPhone 6s never makes it through 2/3 of a day without running out of battery. The iPhone already has a small battery. Using bluetooth audio takes more battery. So, I plug-in when I get the chance. Wireless charging could help here in certain situations (at home or car), but not all (planes). This is the reason why I don't like the new MacBook - you can't use any USB devices like HDs and charge at the same time.
- Want to listen to music, but your iPhone only has 10% charge. Can't plug-in your headphones to listen to. So you have to choose: Charge your phone OR listen to music.
- In the car, you use GPS on the iPhone AND listen to music or audiobooks. GPS is very draining on power, as is keeping the display lit. You will be driving for a while. You have to choose. Charge your phone and use GPS, or listen to music. Can't do both.
- On a plane, you want to watch a video, play a game, or listen to music. It's a long flight. The iPhone battery won't last on its own, and may be depleted prior to take off, but you can plug it in or use a portable charger. But you can't do both at the same time. I fly a lot, and my phone is always plugged in while I listen to music or play games for the duration of the flight. Any wireless charging stand you might have at home wouldn't work here. The battery on bluetooth earbuds would not last for the duration of a flight here either. Wired headphones are the logical choice here.
- I use a small battery pack to charge while I'm out and about, and am usually listening to music at the same time. I couldn't do this.
- You want to plug into your expensive wired home stereo system and leave your phone playing for a number of hours, but can't plug the iPhone in, so it will be draining the entire time.
I love Apple products, but this would be one step too far at this point for me. It's way different than moving from dock connector to lighting, which was an apple-specific charging port only, or removing a floppy drive or DVD drive from a computer. This would fundamentally change how and when you use the phone for the worse, while providing no real benefits in return. I shouldn't have to drain my phone just to listen to music, and I don't want to compromise between when and how I want to use my phone and when I charge it.