Bitcoin is popular because it is decentralized, which means the government cannot interfere with it. Even if the value of the currency stays the same, there is no way you are able to use it, so it's useless. However, they can always interfere with the mainstream business and stop them from accepting these cryptocurrencies.

While I think we should have some Bitcoin, I suggest you do not keep too much.

For those who are just starting out and trying to understand what cryptocurrencies are, it is normal to feel quite unsure about their reliability or safety. However considering the sheer value of transactions carried out daily, and the fact that the market is global and decentralised, I feel that cryptocurrencies are safe and worth investing in. The system also ensures protection. The main risks I see are only with regards to physical storage of keys.