The biggest advantage of gambling with Bitcoin is that it is private and tax free. The government cannot benefit from your money. However, the biggest disadvantage is; its value is constantly changing. You must calculate the amount you use according to at least 3% variability. Otherwise, you may lose a little while trying to make a profit.
If the government can't benefit through taxes then how do we intend generating revenues for development. This is the reason the government keeps fighting hard to either ban or regulate this crypto currencies so they don't get completely sidelined in our transactions.
The volatility could work either ways it could be bullish or bearish meaning it could be an advantage or disadvantage depending on the price as at when the deposit was made and when the withdrawn profit is made.