This is too one-sided, so here's another angle: ease & peace of use. As in: not constantly having to worry you won't be able to use your phone because you forgot to charge it. I don't have a very smart phone, use it mainly for calls and messages. The thing barely lasts a couple of days even if it gets hardly used. So relying on it for emergencies for instance (no fixed line) means having to take really good care of it. I for one would be much happier with a bulky smartphone that would have weeks of battery life and doesn't require paying that much attention to battery life. (I know maybe I can get a plain cell phone that lasts longer, but that would mean having to give up some handy features of the typical smartphone)
Your problem is you spend many, many hours a day staring at that phone
nope
quite reasonable battery life
let's call that an opinion. I also have a music player that gets used hours every week and lasts months. There's no smartphone in the world, even when you'd turn of the screen and all services except music playing that can do that, so I don't consider it that reasonable.
Where you sleep, is electricity not available?
definitely not always, no. And then we're back at the reliability part. You see, the reason I originally bought a cell phone, long before there was such a thing as a smart phone, was because we used to take trips to rocky areas in the middle of nowhere to do trials riding. One day a guy broke his leg, open wound etc. In no condition to be moved by us to the car, let alone be moved sitting in a car. Having no cell phone meant it took over an hour to get help there. Luckily he didn't bleed to death. So then we decided a cellphone would be of use. Well, if the battery isn't dead of course.