Lots of newbies ask this question.
I guess the simple answer to this question is — it's the choice of people + the opportunities crypto offer over stocks or Gold.
But sometimes not taking risks is the biggest risks people take. As the whole world is adopting this new type of asset class ; allocating a small percentage of your portfolio ( say 5–7% ) into crypto can be good move. Though it's not a financial advice.
The similarity of trading in volatile assets is almost similar to gambling. but in the crypto are more reasonable and more lower risk than only hoping the fortune. That assumption trading crypto are gambling is no longer true. so a best big risk investment in my opinion is bitcoin. there is always risk behind any investment .