Sure, it’s a function.
But how many people besides pimps, CEOs and models actually need that function as opposed to simply wanting it? :rofl
It’s not as simple as being famous, but that’s a whole another topic.
Far from everything we have serves a useful function, fancy watches fall into that category. I have plenty of stuff laying around that doesn’t have much use besides making me happy for having it.
But if we are discussing functionality here as opposed to “I want it because I want it” factor, than it becomes pretty hard to justify a lot of things.