If the currency is removed from our lives, it will be difficult to survive. We have grown out of those days of no currency and barter system and have come a long way to the business world.
Hypothetically in present days, if suddenly all the currency and money vanish from our world,
People will be no longer interested to work as they are not getting any money
The entire business world will break down because there will be no transactions
People who are physically strong will fight with others and acquire properties. As there is no money, everybody is equal and there will be no government and no laws.
After a few decades of chaos, the world may go back to agriculture, hunting, and barter system.