What puzzles me is that I don't know anybody else who feels like this. Most people are surprised at me, or don't seem to notice that they suddenly need two hands to operate their smartphone.
Before, I would avoid doing some tasks on my phone like taking more than a few lines of notes. The bigger screen feels less cramped and I don't feel annoyed while using it. In fact I wrote this comment out on my phone. I've never done that with any of the smaller phones I've had.
I can totally see how having a bigger screen and bigger battery are great. But unfortunately for some of us, we have times where we need to be able to use the phone with one hand.
Over time I've discovered that many apps over alternative ways of doing things that don't require you to reach so far.