It is not a matter of helping the government. It is also a matter of helping needy people. As long as your intention is good and is about helping them, then you should not care about to whom the taxes are going. If they are only going to the government, then who cares anyway? You did actually a good job. Added to that, taxes is related to the bitcoin regulations. Would you rather get it banned or regulated?
The imposition of taxes are one of the key factors that increases the revenue of the government for expenditures, including development of infrastructure, budget allocation per department, funding for health bureaus and many more. Most countries around the world have the prerogative of imposing tax as its bread-and-butter for these enhancements. Most products and services are taxed as it is being regulated by the government.
The question of whether or not bitcoin transactions should be taxed by the government raises an issue of government regulation. We all know that bitcoin has this nature of being decentralized (which the government cannot regulate) which makes it almost impossible for regulation due to the anonymity involving transactions in the blockchain. But like what most people discussed, this
HEAVILY DEPENDS ON THE LAWS ASSOCIATED WITH CRYPTOCURRENCY in general. If there exists no laws about the banning/imposing of tax, then we could say that bitcoin has the freedom on tax.
Bitcoin was created to liberate us from corrupt governments and corporations that serve their own needs. The coinbase transaction in the genesis block, mined by Satoshi Nakamoto contained: "The Times 03/Jan/2009 Chancellor on brink of second bailout for bank". What is your opinion on paying taxes on Bitcoin? The government most likely doesn't know my bitcoin address. Even if they do find it, based on the transactions made from my bank account to exchanges, I could simply say someone stole the private key from me. Many of the posts here asking for help on filing taxes on their Bitcoin make no sense to me. We have a system that allows complete financial freedom and yet people choose to pay their taxes from it and support crooked governments.
The government can't tax Bitcoin but if you go to exchanges and withdraw some money out of it, that's the time they were going to tax you. Most of the exchanges nowadays are owned by the government and they should follow the law because it was implemented since there are too many complaints before of scamming using the name of Bitcoin.
This is highly dependent per country as there are some factors to consider. Just to give you an example, the laws in my country relating to tax imposition on bitcoin do not exists. But bitcoin mining falls under the 'other income' aspect which makes it taxable. Some of my friends who mine pay tax to the government whenever they mine.