Well said, it's really hard to say which to keep. But, just to be on the safe side I'll keep both if ever. The reason is simple, gold has a secured value even if you'll keep it for a long time. On the other hand, bitcoin has risks. We don't know what will happen in 10 years, though bitcoin has been doing great for the last 5 years, it's value is unpredictable in the long run. But, I still think it's worth taking the risk. It's either you'll hold something worthless or something worth  thousands of dollars after 10 years.