Why are people nervous about owning and investing in cryptocurrencies?

[Brutal dark123]

I see a lot of questions about cryptocurrency. I don't understand why people are so suspicious. We all see that even taking into account the fact that the cryptocurrency fluctuates, falls, rises again. But from year to year growing. Even when the price is low, it is a great opportunity to buy more cryptocurrencies when a good time to sell is rising if it is not a long term investment. In any case, there are positive aspects, the main thing to be able to use them and look for. And there is no reason for tantrums and nerves. And the risks associated with cryptocurrencies, we all know and understand. To do this, we do our research. And each of us is doing everything possible to minimize the risks. So why are so many people constantly nervous and worried about it?