Smart money get out of bitcoin from time to time. But they don't get in fiat. They get in gold. That's why they are smart money.
I'd say the dumb money is in gold. If you want to be standing with your pants around your ankles in ten years time then invest in gold.
Here's the problem:
Over the last few millennia, gold gained value due to its monetary properties more than anything. In particular, those of limited supply, fungibility and mobility because coins could be transported anywhere in the age of physical markets and exchanged directly - peer to peer - just as bitcoin is.
However this is no longer possible. Gold has lost this, most important of monetary properties since during the last half century the bulk of the world's trade has moved from a physical to an electronic platform. This means that you no longer transfer ownership and possession of gold in the same trade and so consequently the gold market has forked into 2 distinct monetary media: a physical one and a (so called) "paper" one where ownership is transferred but posession cannot be taken. The problem with the paper market is that it is not a fixed supply, so bang goes the second of gold's great monetary properties.
Gold traders can choose which of these two media they prefer to trade - you can have either mobility or possession but you can't have both.
Because of this "forking" of the market, gold will never again command the kind of values or be able to support the same kind of "safe haven" investment that it did during the last few centuries. It is handicapped permanently and pegged at a value which represents the balance of demand between the physical and paper markets.
Cryptocurrencies, on the other hand, remedy the problem since they are the perfect "bearer instrument". One with which you can take both ownership and possession in the same trade and for that reason are likely to outperform precious metals by several orders of magnitude over the next few years.