Gold has proven a good Store of Value over the last 4,000 Years. It has proven itself against local and global wars, pandemics, discoveries of new worlds (continents). Bitcoin has been around only since 10 years. It has massive challenges to overcome to be continued proven as a good SoV, but I am confident it will be able to overcome those, one by one, becoming a truly digital, better, gold.
Nothing can be challenged about gold as a store of value over thousands of years, and all the other applications it has today - but it is crucial that gold has been proven over a very long period of time (in human terms), while on the other hand Bitcoin has yet to prove its worth - and no matter the time we live where things are evolving far faster than 50 years ago, I think it will take at least another 10 years to see how Bitcoin will position itself in relation to already proven things like gold, silver, stocks, real estate...
When I say another 10 years, I mean a total of 20 years from the first block, because Satoshi himself said something along those lines when he wrote:
"I'm sure that in 20 years there will either be very large transaction volume or no volume." How applicable this thesis is, given that Satoshi could not have foreseen everything that has happened so far, and of course what will happen in the future - remains to be seen.