I own hundreds of knives that have never so much as opened an envelope, and most likely never will. I don't have pictures of 'em all, because I'm lazy and won't ever feel like getting them all out of their various chests and drawers at once just to take pics. Why own knives I'll never use? Simple. I like having them, and I am not perturbed by the "USE YOUR STUFF!!!!?!!1!!?!" crowd you sometimes see posting. They're free to use their stuff as they see fit. Me, I just like owning 'em, taking them out to admire every now and then. I have a dedicated core of around 20 knives I actually carry and use, but even those see much more "carry" than "use".
For a large percentage of the population, if you aren't in a kitchen, there isn't much need for a knife, I personally have to look specifically for ways to use them in this world of easy-open, pull-the-tabs, and "presliced for your convenience". Our ancestors used knives to process animals. Most of us "process" Amazon boxes.
But the pictures we all post here sure are pretty!