All the Bitcoins are useless. I did a transaction today in BTC and paid 2.50 in fees, it took 40 minutes. It's a ponzi scheme, not a store a value. You can't have a value stored in something useless.
If bitcoin is ponzi scheme then why are you here in this forum since you not in support or don't want to participate in ponzi scheme. If you really know what ponzi scheme is all about you wouldn't have call bitcoin a ponzi scheme because of high you pay for a transaction.