The size increase benefit has never made sense to me (for me). I find that no matter the screen size on a phone, I still use it the same way, and for the same duration. Thus, for the increase in size, all I get is increased bulk.
I get that some people spend a fair amount of time on their phones, but for me, if it is more than a couple minutes, I turn to the iPad or Mac. I just do not find phones useful for more than quick checks or replies.
(but I do find it comical to watch people use a phone for things like ApplePay, always thinking 'how is heaving out a brick to pay more convenient?', but then again, my wallet is 1/4 the size of those bricks, plus I have GarminPay if going sans wallet).