Bitcoin has had phenomenal growth in its price and MCap since inception. If we exclude other cryptoassets, Bitcoin has been the best performing asset in the world every year since 2009 through to December 2017 with the exception of 2014. It has beaten all global currencies, equities, commodities, bonds, ETFs, real estate throughout that period. Bubbles are by definition short-lived, they do not keep bubbling for eight years.
The first thing you need to do before you invest in a crypto is to analyze its trading volumes. As a rule, always go for cryptos that have high daily trading volumes, unless there are some big upcoming news about a low volume crypto. High volumes signal to a Crypto’s liquidity, and the presence of an active community. The problem with low volume cryptos is that in most cases, they lack a strong community backing them, and they can easily get delisted from exchanges, leading to losses.
The crypto world is a uniquely perfect environment for arbitrage. As William Belk argues here, the combination of it’s distributed nature, regulation, security, availability, and anonymity factors means that the marketplace has many inefficiencies, and that “arbitrage opportunities will continue indefinitely.” For example, some markets pay a premium for security, geographical location, or simply because they don’t know they can get it cheaper somewhere else. In some cases, the price discrepancies across different exchanges can be as much as 43%.