Bitcoin Disadvantages:

Not being aware of or understanding

The truth is that a lot of people still don't know about digital currencies and Bitcoin.

People need to learn about Bitcoin before they can use it in their daily lives.

To get the word out about Bitcoin, you have to network.

Businesses are starting to accept bitcoins because of their benefits, but the number of places that do so is still small compared to places that accept physical currency.

It's great that Tigerdirect and Overstock take Bitcoin as a form of payment. But if they don't have staff that knows about digital currencies, how will they help customers understand and use Bitcoin to make purchases?

So that they can help customers, the staff needs to learn about Bitcoin. This will take some time and work, for sure. If not, what's the point of having such big companies accept Bitcoin if their employees don't even know what it is?

Risk and Volatility

Bitcoin is volatile because there are only so many coins and the number of people who want them keeps going up every day