No, it's a "barbarous relic" in the words of Keynes, which is why it's not really used as currency any more. There are real reasons why the world went off the gold standard.
Yes, because governments want to print fiat money to finance their debt. It has a nice side effect of moving more money into spending / investment, because inflation eats savings. Instead of gold, people buy homes and stock.
Or, Keynes was wrong and he is responsible with all the boom and bust cycles and inflationary theft.
Serious question, Keynes was born in the late 1880 and didnt publish anything until 1900s... we had boom and bust cycles long before this. How do you explain that?
Yes there were other boom and busts. But Keynes makes sure of it. According to Hayek (and many others), Keynesian spending policies are not a solution to unemployment or economic crises. On the contrary, they are a real threat to economic stability.