Absolutely no. USD is the currency of United State of America. Every nation is basing their currencies on this united state dollars. So absolutely this united state dollar is more than have value and more known into this Bitcoin. Bitcoin is not yet officially introduced to other countries while United State Dollar is known to almost all countries all over the world.
Thats crystal clear bitcoins are far better than dollar and many other international currencies. Nothing is wrong in investing as much as you can into bitcoins. Bitcoins have indeed the capability of replacing dollar forever. Dollar at present is nothing as compared to bitcoins. Bitcoins have beaten gold and dollar successfully.
Tell me how would that happen, do you know that even just a news from china about banning ICOs temporarily the price went down abruptly.
Bitcoin is good and it's the best invention but to replace dollar, it's too ambitious.