why not both of them ? i think with saving 20-30% your profit/money to gold always be a good choice, they already have their own market that can'be ruined by any other thing, even bitcoin i think. Old people and traditional people that can't use technology still hard to believe bitcoin is really exist, but who knows ? we are the next generation of old people, we can teach the next generation 
Thats true, i think people with less technological knowledge would certainly choose to invest in gold. With it then gold will continue to have investors. Besides gold I think will have a bright future too. See gold hard to find, and has a limit on the number