Because #Bitcoin, now worth a kilogram of the stuff that is so rare that it requires colliding neutron stars for its manufacture  (not quite as hard as one might think, as the stars evolve together in binary systems), follows a Power Law and the more people realize BTC/AU ~ Age^5.5 the more they will dump Au (Money 1.0) for BTC (Money 3.0).  

Age of the new tech, of course.
#Bitcoin