Here are some strong reasons why the government must be willing to accept digital currency:

To increase net worth. Our cash will now gradually decrease its selling value if we keep it too long. Unlike the case if we hedge on Cryptocurrency, at least we can get the opportunity to increase the value of the money we save.
Technology. The technology behind Cryptocurrency is Blockchain, where no institution or country can control transactions and the value of the digital currency. Blockchain has a transaction log ledger that can be accessed by everyone without any cheating, because basically the Blockchain Ledger is managed by all users around the world.
Good track record. Since Bitcoin and other crypto currencies are released, investors are greatly benefited by price spikes from time to time. Therefore, investing in Cryptocurrency gives us the opportunity to increase our assets over time.