Because Gold is widely regarded as a sound long-term investment and a hedge against market volatility. Bitcoin is a coded, crowdsourced currency that did not exist until 2009. Civilizations have traded Gold since roughly 600 B.C. and it continues to be used by dealers and investors with great enthusiasm today. Gold is also sure to never lose its intrinsic value as a Precious Metal with numerous practical applications. People who want to make a really reliable investment are choosing gold. Instead, people who want a quick profit choose crypto currency.