Before i argue these points, i do agree that gold was the best metal to be money, but i do not agree that it is the best metal,( i do acknowledge that as subjective). I believe that other metals were much more useful than gold during the time that gold was becoming money, but yes, gold's unique properties made it the best metal for monetary uses.
1. It can be destroyed. It will dissolve in nitric/hydrochloric acid, Platinum will not. Most metals need to be mined at a cost, some with higher cost/yield than gold.
2.It did not become money because of its conductivity, as that wasnt valuable during the time period we are talking about. Gold is less conductive than silver and copper, but more resistant to corrosion and oxidation. Gold is more reactive than platinum and others and less heat resistant while being slightly more conductive than those. All these metals can be used in electronics.
3. Gold is the most malleable metal, making it a great option for various uses, jewelry, decoration, and forming into coins being the most impactful at the time it was being adopted as money. Like i said, great properties for being the best metal money
4. It is not by far the most useful metal out there. This is a subjective statement. I would suggest that metals that can be used for strength in weapons, tools, buildings, vehicles, everyrhing, more "useful" than one that can make electronics more efficient.
5. Yes, It will likely always have a market of buyers. Its long history as a store of value will persist likely until it is no longer difficult to obtain, maybe asteroids or inter-planetary mining. Benefit of golds dominant network effect, not sure if thats the right term for gold but i think you get what i mean.
This is why it became money, still not the best metal though. It was the best metal for money at one point, likely that would be platinum now, but platinum is not quite good enough to overtake gold now that gold has already been established. And platinum was too scarce and too difficult to be used when metals were being adopted as money.
Great points. Thanks for taking the time to banter 🤙