We really don't know that bitcoin will survive that long or not as its always risky to invest in bitcoin, So I would prefer to invest in gold to have a stable profits in future.
Bitcoin has survive the early stages and the price has gone up drastically since it first started, if it can handle the early stages then there is no way that it could have been dead . The worst possible case will be that it will never improve anymore and the price wont increase however being dead is another story