the top concerns/worries/risks that bitcoin posses is that
1. Volatility - price is not fixed
2. You forget your key... u lose all your bitcoin. no help to restore... Its GONE
3.Online scammers and hackers are prying the crypto world waiting to jump at a victim to wipe out their currency
4. Gotta be the fact that it is banned in most major countries in the work making it hard to carry out a trade
5. Lastly, Bitcoin, especially in its early days, was well known for its use on the Web, in money-laundering activities, or to purchase illegal items