I find that the people who say things like this are the same folk who will spend extra on a gaming PC battlestation that has color-coordinated neon lighting from the chassis, monitor backlighting, and on their keyboard.

People value aesthetics. Not everything in life is purely functional. Maybe you don't personally appreciate the beauty of a nice wristwatch strap, and that's fine. But I can virtually guarantee that there's some area of your life where you have spent additional dollars on a widget to gain some additional aesthetic value above and beyond what was purely functional. You simply did so on objects you personally care about. You likely have even done so without being consciously aware of this decision! Someone else with different preferences could easily look at that purchase and boggle at how anyone could spend extra on something so pointless.

And if you really, truly, have never spent extra time, effort, or money on something you'd appreciated for its beauty? To me, that's… just kind of depressing.