gold is also a good investment, every year thee price goes up and in case of emergency you can directly sell your gold, on the otherhand bitcoin is digital coin and future of currencies is also better because you can earn by trading and investing. you can double up your money if you are good in trading . there are a lot of trader selling their gold to convert bitcoin and i must say its worth it.
Not every year gold's prices are going up but I agree gold is the easiest asset to liquidate hence holding it for emergency needs makes sense.