It's a bit more than that. I doubt OP is interested in the volatility and looking at Bitcoin as an investment. The question is strictly about security and this is much better with Bitcoin. A bank is still managed by a third person and you never know what that person might do. There might be a bombing in Switzerland that disrupts the network or power in the area and you won';t be able to use your money for a time. With Bitcoin it's all in your hands.