So, we saw what’s a cryptocurrency and some examples, but the real question about it are what’s it pros and cons ? Because we can already pay on the Internet with our actual currency…

We can admit that cryptocurrencies don't talk to everyone, especially to people who are not interested in them. But in spite of that, thanks to the media coverage of the last few years, they are starting to materialize although it is still very unstable.

Firstly, here are the advantages of this new technology :
those currency are completely reducing paperwork, in fact, there is no waste of paper because everything is online and doesn’t need to be printed or built (in contrary of coins or bills).
There is no risk that the bank takes all of your money to cover losses from their bad investments.
There is a fraud reduction : in fact, a payment made with bitcoin cannot be reversed after the fact. This is different from credit card payments, which can be reversed using chargebacks, a feature often exploited by fraudsters.
A good for a bad, the payments are almost untraceable. This can allow you to illegally buy drugs, weapons and a whole host of other things.
The payments are instantly done with cryptocurrencies, meanwhile with credit cards it takes a day or more.
The fees are much lower compared to today's currency banks.

We saw that there is many advantages but there is also cons :
There is a bunch of scam websites such as Bitconnect

|| Bitconnect is known to have been a big scam in the cryptocurrency world by setting up a vast ponzi scheme. It's a scam that was first set up in 1919 by Charles Ponzi.
He dangled miraculous returns to the subscribers of his fund. In fact, he used the contributions of the new entrants to pay the income of the older ones.
Each subscriber earned additional interest if he sponsored new entrants, which encouraged membership and naturally increased the number of subscribers. Each new subscriber did the same, hence the pyramid system.

This system works as long as there are enough new entrants to pay the interest of the others and as long as the number of subscribers withdrawing their investment remains limited. Not to mention the fact that it had no white paper and its platforms were not secure and were constantly under attack. This scam has cost a lot of people a lot of money. ||

The exchange rate of crypto currencies is very volatile and depends to a certain extent on geopolitical, economic and cultural events, as well as on the confidence of the holders of the crypto currency in the project provided by it. We can see examples: During the conflict between the United States and Iran in early 2020 the market for cryptocurrencies recorded a certain rise. It's hard not to talk about the effects of covid-19 on the economy. Bitcoin and crypto currencies in general are safe havens, but to a certain extent. The covid-19 led to a sharp rise in the price of Bitcoin when it was still known to be present only in China. After the world realized that the virus was going to affect more and more countries in the world, the oil prices that had been falling until then collapsed because the OPEC countries could not reach an agreement. The European markets also collapsed, the American dow jones calculated daily according to the average price of the thirty most important stock exchange values (blues chips) like  WalMart, Coca Cola or Gillette, and which is the only index that allows us to see the evolution of the economy over more than 136 years has known the biggest fall since 1884. That's when it became clear that the joke was over, and within a few days Bitcoin had lost 50% of its value. We've seen the transaction rate to the stablecoins explode.

The stock market is also largely held by “whales” which is a cluster made up of roughly 1,600 investors who hold around $37 billion in Bitcoin. This means that they hold almost one third of all the Bitcoin in circulation—close to 5 million coins. These whales can make the curve vary according to their transfer, which is quite destabilizing and does not guarantee a stable curve.
Having virtual currency is risky. You can lose everything, but you can also get robbed if you're not careful enough.You are responsible for your actions and there is no guarantee that you will get your money back.
Also, be careful because some countries tax up to 30%, such as France, while Germany does not.