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.
Definitely, and most especially not even a decentralized one that is still in its early age. I remembered how volatile gold was as well in its early stage when it hit the market, which makes it normal to see things like this until we start seeing more smart moneys entering the market, huge growth coming up in the future, capitalization increasing to top notch and a lot more. We just have to deal with how things are for now, to enjoy the future at the end.