The reason why Bitcoin is not accepted by the government is first of all because Bitcoin is not under the supervision of the government, the government cannot do things as it pleases, the government cannot ban Bitcoin, and Bitcoin will not be killed.
They can ban bitcoin and restrict us from using it, but they can't completely destroy it because bitcoin is decentralized and popular all over the world. The government doesn't accept bitcoin because they can't control it and they don't get any benefit if they accept it. Bitcoin frees us, and that's what the government hates the most...There are too many reasons for them to reject bitcoin.