If you plan to invest on bitcoin, it will surely be useful because it will not only serve as an investment, you can also use it to buy things online as well as to gain profit via crypto trading and btc holding. You must invest in bitcoin because it is a new decentralized currency that aims to aid on transactions online without the need of a middlemen. Also, bitcoin is the virtual gold according to Peter Thiel, the cofounder of PayPal and thus it will help you gain profit since it has not reached it's full potential yet and is still in it's early ages.