Cryptocurrencies are subject to high fluctuations in value. A decrease in value or a total loss is possible at any time. The loss of access to data and passwords can also result in a total loss. Probably the biggest concerns of cryptocurrencies are the scaling issues that arise.
While the number of digital currencies and their adoption are increasing rapidly, they are still outpaced by the number of transactions that the payment giant, VISA, processes every day. In addition, the speed of a transaction is another important indicator with which cryptocurrencies cannot compete at the same level as companies such as VISA and Mastercard until the infrastructure offered by these technologies is massively expanded. Such evolution is complex and difficult to carry out smoothly. However, some have already proposed several solutions, such as lighting networks, fragmentation and staking, as options to overcome the problem of scalability.
Many people are optimistic about cryptocurrencies like Bitcoin, but detractors point to a major flaw: cryptocurrency mining consumes a lot of energy. While mining is just one of the methods available for validating cryptocurrency transactions and minting new cryptocurrencies, it is the method used by Bitcoin and Ethereum, the two main cryptocurrencies. Many believe that potential upward gains outweigh negative dangers and that these risks can be minimized by carefully evaluating a person's position in cryptocurrency in the context of their overall investment portfolio.