A comparison of the past performance of these asset classes. With arguments for and against each of them. Many people choose to keep their assets in a combination, to diversify. Some consider moving a small percentage of their wealth into Bitcoin.
Bitcoin vs. fiat currency (such as the US Dollar)
Bitcoin vs. gold (and metals in general)
Bitcoin vs. rare collectible items (cars, watches etc.)
Bitcoin vs. altcoins (other crypto currencies such as Ethereum)