I don't think there is any known benefits of banning Bitcoin mining, an attempt to ban Bitcoin mining will face strong resistance by miners, first because Bitcoin has great rewards benefits now and in the future; secondly there are many countries in the world who will make energy available since they they can generate huge revenue over times.
In my opinion, any country that has banned Bitcoin with flency excuses may have some economic or political motive. However, economically Bitcoin is in a better positions to enhance the economy of any nation if there are room for a investments opportunity with unnecessary regulatory laws.