These are the some of the disadvantages that i think are the most criticist. Exposure to Bitcoin-Specific Scams and Fraud are very often in the bitcoin. The Black Market Activity May Damage Reputation and Usefulness of bitcoin. Daily flactuation of bitcoi price and Susceptible to High Price Volatility. No Chargebacks or Refunds when the transaction is done and there is nothing you can do about it and Potential of the bitcoin to Be Replaced by Superior Cryptocurrency is very like to happen.