The reason: they say it is to protect them, but it is clear to me that they are not telling the whole truth.
Yeah obviously no banking or governmental entity will not unveil the whole truth. But we all know that. Yes, bitcoin will lead them to lose their power and control on financial world which is the reason that we are all witnessing governments and banks are looking to regulate or even ban cryptocurency adoption. But, nothing negatively will happen just because of their action against cryptocurencies in long run due to its potentials and other revolutionary characteristics.
maybe people should be using P2P.
Every action against cryptocurrencies from banks or government authorities will lead people to exercise the true practices of decentralized environments. People will realize the importance of being not dependent on banks over the time when they encounter such restrictions. So, personally I also welcome when banks limits its customers on cryptocurrency related activities.