One part of people wants fast and easy money. However, when they begin to suffer losses, they are disappointed in cryptography. Another part of people see great prospects in this market and begin to develop it. The third part of people uses cryptocurrencies for convenience, because they get paid in cryptocurrency. There are hackers who don't care what they steal. The main thing that was a lot. But all this would not have happened without people who buy currency in the hope of its growth and earnings on it.