That's pretty much my usage pattern too, including some group texting, the occasional call and sometimes taking photos/videos. Otherwise my phone pretty much stays in my pocket or on my table the entire day. What are you using your phone for that makes that so unbelievable?
I do use whatsapp, camera and the phone functionality, web browsing very seldom, mostly for "emergencies". Spotify, work chat, mail, calendar and watching entertainment is all stuff I either do at my desktop or on the TV, never use the phone for those things.
Web browsing (like right now), photos, e-books, lots of messaging, music, sometimes video.
I use NFC payments often, but I wouldn't say that amounts to more than a few percent of my total usage.
Everyone uses their phones differently, of course. I don't think your use is unbelievable or odd, but I do think your use patterns are not the common case.