The buyer thought he got that Porshce for $35k but 2 weeks later those bitcoins are worth almost $55k so he got fucked royally. So what incentive does anyone have to actually spend their bitcoins if they risk losing significant money by not holding onto them?
I keep hearing this talk about all these new merchants accepting Bitcoin which sounds good, but as a customer I would never want to spend them as the price is shooting up, and as a merchant I would never want to accept them as the price plummets.
That's a HUGE problem.
This is the mentality that is going to cause the price to keep going up, until one day, everyone fears it can't go on any longer, and then they all rush to sell.