While your statement might not have made much sense grammaticality, it was still a formed sentence which is all I care about because this is a forum about photography.
The way I took it, was the same as if I said "people don't just walk for the sake of walking." Now you can argue that yes, people can just walk for the sake of walking, but I would argue that they do it for some reason. Either they enjoy the physical exercise, it relaxes them, or maybe it just makes their shoes feel good (they have a soul right?)
So someone does not set their lens on manual focus, spin the ring and take a picture of the wall while they spin in their chair, just to take an image and post it on the internet. They need a reason to produce and present the image, even if it's to test the effects of shutter speed while they spin on their chair.