crypto is not just an illusion. This currency can not be physically seen and held, but we can use this currency and we can feel the benefits. This currency is often considered unreal and imaginary, but with this currency, there are many payments that get rich and many earn income.
Crypto money cannot be seen physically, because of its digital use and ownership so that it is only available on the internet, but can be used to pay for transactions in countries that have legalized it, for trading or for investment.
Crypto is actually the future money, where the value can be expensive depending on the amount of supply and demand. Even today Bitcoin has reached a price of USD 6137, and I am sure that in the future it will continue to increase.