Gold is finished, gold is dead. Everyone's money should be in btc, ltc doge and vidz.
Gold still has value since it is a precious metal that is used in many industries.
But what if someone finds a way to synthesize it? I've read about bacteria that can produce gold in very small quantities. Also, there may be large pockets of gold just waiting to be found and an emergence of such pocket due to an earthquake for instance might crash the prices. Gold may look like a solid investment, but you never know...
Nothing is certain in this world, gold may be the most valuable commodity fiat now but the future cannot be predicted and bitcoin has the potential to be very popular and will grow its value. Holding both would be great but if it's not possible, choose the one that you feel would be more valuable in the future. Since, we are positive about bitcoin's future, in that sense, I can always recommend bitcoin.