Bitcoin is useless? Why & how? Bitcoin is the first decentralized currency introduced to the world. Its autonomous nature making it more and more popular. It rising price attracting investors from all classes. But due to high volatility, limited supply, more transaction time and more transaction charges, use of bitcoin`s in illegal activities making it less popular among new and existing investors. If bitcoin community is not going take a note of this then in future bitcoin`s popularity many go on diminishing. If any new currency get introduced with more sophisticated features then bitcoin will really become useless.