First, not everyone invests only in cryptocurrencies. Many have insurance in the form of traditional and well-known investments. Secondly, competently investing in the crypto-currency market can quickly and significantly increase your finances. I don't see anything wrong with that. An abnormal situation in my opinion is when people do not have any knowledge and decided that there is a freebie, come for quick money and eventually lose everything. And then complain about cryptography in General.