Commerce on the Internet has come to rely almost exclusively on financial institutions serving as trusted third parties to process electronic payments. While the system works well enough for most transactions, it still suffers from the inherent weaknesses of the trust based model. Completely non-reversible transactions are not really possible, since financial institutions cannot avoid mediating disputes.
Cryptocurrencies are not a get rich quick scheme; it takes time to see success and even then it’s not guaranteed. Remember you are backing young companies or complete startups and the odds are that 90% of these will fail in the long term. Before doing anything, you should be fully aware of the risks. If you are comfortable with it, then don’t invest more you can afford or feel comfortable with losing.
Consequently, with the short term price movements of bitcoin and other cryptocurrencies being incredibly volatile and oftentimes nothing short of inexplicable, I highly caution anyone against making decisions such as selling their bitcoins on the way down in anticipation of a market crash, so as to either avoid the crash or to buy their coins back at a cheaper price at the bottom of the crash.
Please note that virtual currency is a digital representation of value that functions as a medium of exchange, a unit of account, or a store of value, but it does not have legal tender status. Virtual currencies are sometimes exchanged for U.S. dollars or other currencies around the world, but they are not currently backed nor supported by any government or central bank. Their value is completely derived by market forces of supply and demand, and they are more volatile than traditional fiat currencies. Profits and losses related to this volatility are amplified in margined futures contracts.