I love the iphone. I get my wife the latest and greatest every two years, and I forget about it. If she had an Android anything, I'd be spending at least an hour per week on tech support. It's absolutely worth the inflated price for me, and the fact that it's extremely limited in possible features is a bonus. Just like I used to love stick, but now an automatic tranny is great, as my enjoyment is the destination not the trip.
Now as far as the iphone 6s being usable - that's my point. It is usable, on the old OS it was designed for. Because you can't load your own OS on it, it will never run the latest. While the Nexus does run the latest, and is completely usable. I do remember when my brother loaded some latest ios on his iphone 5S, and it literally became too slow to answer a phonecall.
Apple's lock-in is in my opinion a feature for its target market. That's why they get like $1200 from me every two years. Me, my concern was battery life. For that I needed to not have crap that keeps phoning home and waking up the phone. Imagine charging once per week. While not an issue now, I used to travel a lot. Country-hopping trips. Yes, you can charge at the airport, tied to a full charing pole for an hour. Yes you can charge while sleeping on the plane and have a usb cable hanging in six inches in front of your face getting in the way. Or... You can literally not worry about it for a week.
There are of course other things - I want to chromecast my screen or cast a movie from a pirate streaming site (not the youtube app). I want toggles on my lock screen and home screen to turn off data/wifi/bluetooth. I want to turn on the flashlight if I press both power buttons when the phone screen is off. I more importantly need a filesystem that I can store OVAs on that I can take to customer sites for demos - why would I carry a usb stick when my phone is always with me. I want a web server running on it and my laptop to dump a backup of itself onto the phone daily. This means the phone phone software needs to recognize that the phone hardware is a computer, not a toy for 5yo kids. My wife on the other hand needs it to be a toy, because if it wasn't, she'd do everything possible to get viruses, delete everything, and screw something up. So I got an android, she has an iphone.
Now, you think I'm complaining about longevity. Let's see the reality though.
The post I'm replying to touts the iphone's longevity compared to Android. I point out Android has much, much longer longevity and he has it backwards. You then declare I'm complaining about the iphone's longevity.
Now, normally I would normally unload on you with all kinds of funny (for me) things at this point, because you now fit into a certain category of people, but this isn't the place.