Bitcoin could very easily collapse on the sheer fact that it isn't backed by anything. The US Dollar is backed by the US government which has a NET worth of $400 Trillion minimum part of which are oil and mineral rights approx $125 trillion dollars that could very easily be liquidated to pay off US debt in a very short time. Most other countries have currencies backed by their net worth. Most people don't think about that when it comes to getting scammed into a digital equation that is supposed to have worth based on nothing but some illogical faith.