It's simply because most people are dummies who only want to (ab)use cryptos as a way to get rich fast. I bet that there's not one casino and sports gambler out there who isn't already heavily "gambling" with cryptos. People like that can't wait 3, 4 or 5 years to make a profit. They want a quick fix.

And let's not forget about all the little kids who scream "Lambo" everywhere they show up. Most of them don't even know where they have their pocket money invested in.