Both gold and BTC are highly valuable, and both have future, but if I have to choose i would say gold because it is material, and price is rising from day to day, and with BTC you never know what will happen. 

science does not work that way, science mostly provides facts that God does not exits  

Bitcoins are awesome, but i would not take them for salary because bitcoins are not stable and you could lose your money if you need cash, and BTC price is low    

I think ETH will be even bigger, price just started to grow, so you should keep it another month or two