Bitcoin is the advanced technology useful for doing big transactions in a simple way. Some of the people said that Bitcoin is not useful, waste of investing money, etc... Don't think in negative way and research about bitcoin, then you will get an overall idea. Be positive....
Those who have the guts to say those things against our bitcoin never really know anything about bitcoin. They maybe have no idea about bitcoin and have no guts to try it. Actually maybe they are just being afraid. Well, we do not have to be affected with them with what they perceived with bitcoin. We knew what is the potential of bitcoin as an investment.