I do use the phone itself for audiobooks and podcasts, but otherwise its basically a server (not the best term for that.. but you get what I mean.)
What I don't get about the larger phones is how people comfortably carry them around. Maybe its because I wear skinny jeans / pants, but there's absolutely no way I could fit a larger phone in the pockets of my pants, and I rarely have a jacket on.
But the love of the SE form-factor is not isolated to HN. I know a lot of people who love a smaller phone for various reasons.
As the tech gets thinner, I'm longing for the day when we get something similar to the folding phone from HER, but with a few modifications (e.g. memory LCD / eink for other side..)