Being old(-ish), I rather like my Pixel XL which, at 5.5", is right on the cusp of being a phablet.
I'm sure I don't use its full potential but I do play a couple games (I find that Ingress helps get me out of the house occasionally), stream on it when nothing larger is available, and... oh that's right, sometimes I make phone calls.
Heh. Seriously, I do use it to pay for things, eBay, reading IT hack sites, some social networking, and even (rarely) remote control one of my desktops. And for some 2FA.
Actually, I use it for a lot of little stuff. It's almost like it's not just a phone, but also a handy pocket-sized computer that does video!