I don't think we're that small of a minority. Quite a few people don't actively use any social media, and taking memento photos is an unusual activity for many people, done mostly when going on rare vacations if at all. That leaves purely utilitarian photo taking, like uploading checks or taking a picture to help you remember where you parked your car.

Those people perhaps don't buy fancy smartphones though, but more like "purely utilitarian" ones? Whereas this subthread is about the possibility of the Apple Watch replacing the smartphone for iPhone users...

No, a lot of people like I describe buy iphones simply because they're fashionable. If fashions change, they could be well served by a smart watch instead.