I think they invest in crypto market because its easy to understand and like other said you can earn a lot but high risk . I see some crypto-enthusiast that success in this kind of market and they are give a tips to other to how to win and avoid loss . You are right in saying the investing in one basket is risky because of this lose you will never back again and you cant do anything more , so i want to decide to put my money in different investment incase of what happen if lose or win .
Mostly people consider cryptocurrency as a future of fiat many people just move to bitcoins and leave using fiat.It has highly potential to increase as compare to Gold and stock exchange.Bitcoin is worth for long term investing.