I think there's no proof that Bitcoin has zero value, how can be a great coin become have no value if many people are still want to buy this coin
If no one wants to
buy use it as a medium of exchange anymore, then it has zero worth. The chances are probably small in the short term. However, can we really determine that in 100 years, people are going to still find Bitcoin has worth?
The OP didn't really make that distinction from the start. Now that the issue is intrinsic value, I'd agree. Bitcoin has no intrinsic value. Satoshi himself made that point in his early postings. What the market uses as money never boils down to its intrinsic value.
Whether it has value is another matter entirely. That determination is up to the market.
It appears the OP will never get it. Therefore, we will never have the time to explain it to him.

I suppose we all can try though.

I couldn't care less about the op or trying to change his mind. My concern with the op is his arrogance and trying to spread his garbage way of thinking onto other people because that is just sad and sad people try to spread their sadness to everyone around them. I would only hope people in the future do not buy what this person is saying when they read it. Half truths are not whole truths. Think for yourself.