As a basic rule of thumb, no currency should be considered absolutely safe from failures or hard times. Bitcoin has proven reliable for years since its inception and there is a lot of potential for Bitcoin to continue to grow. However, no one is in a position to predict what the future will be for value of Bitcoin.
Bitcoin price was still unstable. Sometimes it increase and also decrease. The value of it was really hard to predict. Because bitcoin was decentralized no one controls it value. But as what we see bitcoin was continue growing and was slowly develop. Day by day, it became more usable. We all hope that the future of will be good.