So I think everything. Just what will you do if bitcoin starts with the same speed or even faster to fall down? You must understand what ever the price may increase and someday it will happen. It seems to me that it is too early to speak about bitcoin as a reliable investment.
We can say that bitcoin is gold because bitcoin is work on tradings and transaction that has from of value in the market which is related to its stock like gold. But in terms of transactions bitcoin is more that a gold because it could be used in faster and more reliable transactions.