Bitcoin is decentralized and bitcoin can be used as the mode of payment in some business and also bitcoin can be used to send some funds wherever you are whenever you want,. bitcoin is increasing the value itself,
I agree with your opinion, and there is a little extra opinion from me that bitcoin is a virtural money currency developed by many people and bitcoin currencies like rupiah or dollar, but only available in the digital world. The concept sounds like eGold, though it's really much different.