It would be nice if the government support bitcoin, but we know the fact that it is impossible for now, bitcoin is not stable coin, prices changes time to time, as of present most transaction or payment required exact amount.
It may not be beneficial for the government to do that because then their national currency would come in danger and no one would like to do that as use of the btc will rise and their Fiat would get reduce which means their would be drop in their currency value .