Yes bitcoin is taxable. Not by means of the government is taxing but I guess that the miners were the one who are asking for taxes. The confirmation is dependable on how much btc you spend. If you will spend the high amount in sending then the confirmation of your transaction will be fast.
Don't even know what you, nor most people on this thread are trying to say but I'll sum it up fast for you bud.
When you earn bitcoins, you're going to have to state that you've earned this -- easiest way is going to be convert these Bitcoins to cash and then file it on your taxes as earned income, as you wouldn't want a fluctuating price present on their as it would fuck with your taxes.
Don't believe what anyone says when they say no, you're going to have to pay taxes on any earned income. Plain and Simple.