I suppose the reason why some governments from third-world countries ban bitcoin is not because of its helpfulness but it's what bitcoin can do to banks and governments. They are afraid and frightened of bitcoin since to them, bitcoin has the potential of replacing traditional currencies and disrupting their economy. My government has started to pay attention to bitcoin and they are likely to ban it but there hasn't been many regulations about this so I'm still lucky to be able to make a living from bitcoin.