Most economies around the world have been in the doldrums since the Global Financial Crisis of 2007/8 and the Great Recession that followed. Unemployment in some European nations has been at levels not seen since the Great Depression. Although the situation is not as dire in all nations, economic activity remains well below potential virtually everywhere. The result is needless human suffering.
In a nutshell, the economy comes down to this: we have available labor time and natural resources with which we can produce some stuff and distribute it. Unemployment now means lost production now that can never be recovered in the future.