Gold is valuable because people agree that it is. It's the same with an abstraction of value. Gold does have problems though, which bitcoin can solve. Bitcoin certainly has the potential to be a better store of value than gold, one more suited to our modern digital world.

Bitcoin does of course have its problems as well, not least of which being the volatility. But unlike gold, bitcoin is under development, and these problems can be overcome. Give it time, bitcoin will become the standard store of value. Bitcoin (and crypto in general) has been a phenomenal success already, but it is still early days. There is so much more to come.