yes, I agree with you, that gold is one of the best investment places. but I think that bitcoin has always been the main investment place than gold.
the value of gold can also change, but changes in gold values more slowly. so, I think, even though bitcoin today is falling drastically, I will not buy gold, and I will always buy more bitcoin, then hold it until bitcoin rises again. and I get a bigger profit from bitcoin.
If Bitcoin goes to $2,000 by October 2018, bitcoin went up from $1000 to $2000 only in one year. Bitcoin rise is high and fall is also the same. Looks like HYIP cartel are involved in Bitcoin.