If gold is suddenly used almost exclusively to back currency, what do ya think is going to happen to the price of electronics which currently utilize gold for its excellent conductive properties? Are you willing to pay ten or twenty times as much as you currently do for home electronics that still utilize gold? Or will you instead be content with a future where new electronic devices don't perform nearly as well as our current tech, because they no longer utilize gold, but are limited to using lesser conductors?
Actually we don't use very much gold in electronics because it's expensive and not a very good conductor compared to copper (silver is the best conductor, then copper). A very thin gold coating is found in some high end connectors because it doesn't corrode over time.
But the question is, why does money (or electronic bits) have value? It's not because it's backed by something like silver or gold, because that's just pushing the question back a level. Why would they have value?
And it turns out that the only things that make money work are trust and confidence. You trust that it's not fake, and you accept it as payment because you're confident that anyone else you need to transact with will accept it as well, assigning it the same value you did. That means our money doesn't need its value tied to one particular thing, because it's tied to the vaue of everything.
The job of the Fed and other bodies is to try to keep the money supply (T1, T2, etc) pretty closely matched up with the "everything" that it represents, so that the ratio of "everything" to dollars doesn't get wonky.
The problem is, the Fed is not doing a good job, it was for a while then we replaced a good Fed Chairman with a terrible Fed chairman and we see prices going up. The problem is the actual paper currency itself, it is too easy to make paper currency and its too easy to expand the money supply, all the Fed has to do is print more notes with more zeros on it and the currency we hold is devalued, it is a way of stealing from us remotely, just because actual physical currency isn't flowing out of our bank accounts and strong boxes, doesn't mean that we aren't being robbed by our government! If the currency is gold, the government can't make more gold easily. You could print $1,000,000 on a gold coin and it is still worth only what the amount of gold in it is worth, that is the beauty of it.