Or any other cryptocurrency due to it’s increased volatility and the risky environment around it. With cryptocurrencies it’s like walking into a casino with a brick of cash. You don’t know what’s going to happen throughout the night, but one thing’s for sure and that’s the fact that you stand a good chance of loosing that money instead of winning more with it.
Now just think of these hacks as less common than usual, but major threats to Bitcoin. When the North Korean hackers stole $80M by exploiting vulnerabilities in the Bangladesh bank system and socially engineered the transfers none of the real coins suffered from volatility and/or losses while virtual currencies drop as soon as news of a hack breaks.
On top of that to mine Bitcoins you need a lot of time and resources so in the long term it might not prove as profitable as one may thing, especially with these stability issues.