I'm not an economist, but I still think that the "value" of something is what people are willing to pay for it at the moment. Please correct me if I'm wrong.
You could resell a loaf of bread if you want and maybe make a profit. You could also eat your loaf of bread if you do not want to re-sell it.
What would you do with your bitcoin if you could never sell it

NOTHING That means it has zero intrinsic value. The only value that Bitcoin has is what some greater fool will pay for it.