About Bitcoin

Why is it scary to invest in cryptocurrency?

The price of Bitcoin fell by 67% to $17,000 for the first time in 5 years. The fear index dropped to level 6 (an all-time low). So is it worth getting involved at all, or is it all a “bubble”?
I first heard about the concept of cryptocurrency back in 2015. Then Bitcoin reached its first all-time high, then I watched it become worth $17,000 in 2017, and in 2018 I even came into contact with it.