For more than a century, no asset class has been able to hold a candle to the stock market in terms of annualized return. Despite its volatility, the benchmark S&P 500 (SNPINDEX: ^GSPC) has significantly outperformed commodities, real estate, and bonds over the very long term. But over the last decade, cryptocurrencies have absolutely crushed the S&P 500 in the return column, with Bitcoin (CRYPTO: BTC), the world's largest digital currency, leading the way. Over the last 15 years, Bitcoin has catapulted f ...