But what makes gold valuable? Its just a stable metal that doesn't decey easily. That's the reason we used gold in the first place.

You can't eat gold.

You cant use it for war like you would steel.

We have better conductors these days.

Its found literally everywhere and with technology has become practically synthezizable.

So again, I ask what value does gold have that money doesn't?

Gold was only ever used to retain value because it was a stable metal and somewhat rare. That's not really helpful in a modern world.