There is no such thing as inherent value
Seriously what is the debate here. Gold is "worthless" becaus it serves "no purpose" (which isn't even true).
Is that not the same thing as cash?
Does expensive clothing have any value? All it does is look pretty (which gold does too)
Things only have value when people place value on them. Trading cards are worth a lot and they are made of cardboard. I would not spend more than $1 for an 8 track but I bet it cost more than that to make it.
Plus, copper, silver, timber, potash, it all grows from the earth, for free! Oil too!
Does anybody remember tickle me elmo? Is it still worth as much?
On a really abstract note, what is a "purpose"? AAPL makes money because they sell expensive gadgets. But these gadgets serve no "purpose", they just entertain you.
Is a "purpose" progression of human life? Animal life? Plant life? What do you consider progression?
Is a "purpose" fun? Is it happiness?
What about airplanes? Who needs to travel, you can live perfectly fine where you are. Or you could take a boat.
What purpose does TV serve? We just watch people do other things. I can do that by looking at a window.
Supply and demand determine value. Thats it. If you have ever once in your entire life seen anything fluctuate in value, then don't try to tell me something is worthless, when two pounds of it is roughly what the average american makes in one year.