I dont usually like really big phones. I want phones that can fit in my hand. But last year I switched from an iPhone 6 to 6 Plus, to see what difference it made it my life. Its advantages turned out to be really useful: a bigger battery, a larger screen with higher resolution. And I realized, when I switched back to an iPhone 6, that optical image stabilization made a difference, too.sometimes.
I missed the surer, clearer pictures in low light that the Plus gave in a pinch in darkened press rooms during live events.(For better or worse, thats the sort of place where I need good smartphone photography in a pinch.)