My biggest fear is that I wake up to find my wallets empty or the price collapse and there is anarchy all over with massive dumping and just chaos. I am also afraid that the government puts more restrictions on it. I know people will fight against that.
It is frightening to see a chart that is dominated by red color, getting redder from day to day and the value of assets decreases. It was a truly frightening experience. It took quite a lot of time to restore my trading mentality.
Besides that, I'm also most afraid of hackers. The reason is clear, the assets we accumulate with hard work can just disappear even though we have provided double security.