At the time Apple released the iPhone......... it was a Blackberry, Windows Mobile, and dumb phone world. If Apple asked that about the iPhone, they would have scrapped it. The entire first iPhone was basically a gimmick/novelty item at the time. Apple never asked why would people need an iPhone, they basically enticed a large portion of the world into wanting one. Now look at what it's become.
Same goes for Android phones with large screens. Same goes for the cloud, which I've been using since early last decade(way before any iCloud). I can go on & on.
I hope for more of these so-called gimmicks. Plenty of gimmicks eventually become standard and better. Can smartphones become even faster and/or have less hiccups? Sure they can, but I wouldn't want to sacrifice the extra goodies for it. Some which are very useful to me, and I'm sure other features are useful to others. It's up to the user to decide how big or small a sacrifice is on either side.
For me personally, if killing a feature let's my apps load 1 sec faster and allows me 5 more minutes of bat life, I'll probably choose to keep the feature. Now if it's something major that's a differ story.
I remember Cable anolog TV was straight to the point. You could click back n forth super fast, no real software to lag, no box rebooting for an update when your watching something good at 4 in the morning. But I wouldn't trade the on screen guide or ondemand to get any of that back. I'm pretty sure the Cable and TV industry didn't ask why customers needed ondemand.
Basically, what I'm ranting is that progression is good. I'm not saying your against progression at all, but who wants it to be stale and boring.