Bitcoin and other cryptocurrencies are digital money that has value. They acceptable are a means of payment methods to those willing to accept them and the mainstream society are gradually coming to terms with them. The real value of Bitcoin and other cryptocurrencies lies in the base of their users and their demand and supply that is why they are volatile with their value not static.
For sure the valeu of cryptocurrency is purely nearby investment and holding thus if we hold more and purchase more it's going to increase the value even more than this with all the passing of time, so bitcoin has good importance in market in as much as people are adopting its value and importance as currency and as investment so bitcoin is definitely the most effective coin to invest .