You realize that 'money', in whatever form, shares that property with gold, right? Money only exists because it isn't really convenient to barter bushels of wheat for sheep, just so you can barter said sheep for the apples you need, but the sheep farm doesn't have. The only value money has, is what people will assign to it.
With that said, I'd recommend you to lookup some history of monetary systems, and see what systems survived for how long, and how they came to collapse. Just because bitcoins are digital, a product of technology, doesn't make them any different from tally sticks. It's just a way to exchange stuff without having to barter. Maybe bitcoins are much harder to counterfeit then tally sticks, but then again, it is probably also much easier to sabotage the systems required to trade them. In the end, the currency that sticks around the longest when all the other systems fail, will be the most reliable one to preserve wealth. It's a self-reinforcing process even.
Now go try and see how many bushels of wheat you can get your hands on with just exchanging tally sticks. Then try to buy some using gold.
Well I think they would if you actually tried, but anyway, this is going nowhere. I was just making the point that gold has always had value, and has outlived every form of currency that has ever existed, and will continue to do so, just because there are no real alternatives for it.
Compared to tally sticks, say, or bushels of wheat, or time-banked labor hours.