I think crypto is both an asset ang currency. It is a valuable asset since you can sell it in a higher price. It is a currency like digital currency because you can use this to buy or purchase and even use this to pay for bills. It has multi purpose and we can earn from it. You can use this for money transfer since it is digital, you can do online transaction. This is i think why people are hooked with crypto like btc. Its like 2 in 1 package. You can earn, its a business and you can use this in buying too.