I think this is my last iPhone purchase for personal use.
If the 7 had a headphone jack, buying it would be a no-brainer. As it is I've held off upgrading because to get the same basic functionality I'm going to have to spend $$$$ on dongles or an external Bluetooth DAC or wireless headphones or something to replace a connector that costs maybe $0.10 in bulk.
Instead of buying and using the damn phone I'm having to engineer a solution around it to get it to do something that previous versions did effortlessly.
It's a decision that adds cost and complications, but provides absolutely no user benefit.
It's fast and the battery always lasts 2.x days to me, I charge it again at around 20%. It lasted 3 days 18 hours last time over a long weekend, down to 9%. I checked and I made 8 hours of screen activity so it wasn't in my pocket all the time.
Given how long it lasts I wish they traded some battery to make the phone thinner and lighter, exactly as the SE.