Dont know, but you will be one of those "rich" if you start investing asics now and upgarde continuosuly and save all of your bitcoins... until, let´s say you have 1000+btc. Let it take few years, meanwhile btc value increases against usd etc. and whoops... after five years you have at least few millions usd worth of btc - I guess actaully 1000 btc will be then more likely worth of 10.000.000 usd. So, nice hobby(!) And nothing so unsure as this...