Barter system is too complicated for worldwide usage. The majority of people dont have anything to offer except money
Precisely. It is indeed an old school system which is totally different with Bitcoin.
Government may try to crack Bitcoin or other cryptocurrencies.
At the beginning, they may be winning but at the end they will be a loser, Bitcoin is designed to become decentralized that will no one can control it even the government.
Barter system is opposite of paying money, which paying money system or buying items/services comes with payment method that Bitcoin can be use.