That is why,some are banning bitcoin but they can not totally banned the bitcoin Its happening already that, but not really killing income tax but lessen it. That is why, some government are trying to tax online income like in the case of freelancers and other online money making activities and that includes payment in bitcoin.

I think the government can do cooperation with third parties such as exchanges to give taxes to each user, by applying data verification, the government can give to an individual tax

Probably the government will make a drastic measures just to tax bitcoin users properly, they know our system as it's open to all. There is nothing we can hide that they wouldn't know. Always think that they are in power and we are not, they can do anything that will make us force to comply with.

The possibility of bitcoin to kill income tax is maybe one of the reasons why some countries banned it. The government has no control over bitcoin so if ever it will be more well known, many people will prefer for it to be their currency or mode of payment because it is more convenient to use and with lesser transaction fees. There is really a possibility that bitcoin might kill the income tax in the near future.

and governrment will not allowed that, it will also affect the country itself what would happen if theirs no collected taxes how the government will run and those projects i know most of us really wants to be free regarding to our own earnings but we also needed to think about our community we need to be part of everything.

Nope, they won't stuck it or just pile it in their stash. I am sure they are earning from it, and probably trading it on larger exchange sites. They won't survive if they would just keep the bitcoin, they need to utilize it to earn too. But, as I've said, they are local exchanges, where will they find money to be used for their daily living and for the expenses on their manpower, of course they will transfer their dollar earning to local currency thru banks, that alone is helpful.

But that's true, income tax will be hard to find when no one is declaring it correctly and as many said, bitcoin is not regulated, so imposing the right income tax would be impossible for bitcoin earners, but that's not the only tax the government is collecting from us. 

What are really talking about? It is not me who should first prove that Bitcoin is going to kill any (income) taxes. If someone has to prove anything here it is you who should first show how that could ever happen at all in the first place. Or do you actually come to think if I'm not going to prove that bullshit, your point will become any more valid? Nevertheless, here is the list of countries which have no income tax. Obviously, Bitcoin has nothing to do with that...

And then you talk about "weak theories"

These are the taxes which are still called taxes

But there are other taxes which are not even officially acclaimed as taxes. Before all, I refer to the so-called inflation tax which is levied on anyone who receives their wages in fiat. Since these make up a majority of population, this tax is imposed on almost everyone, and it seems that it is overall as unavoidable as any other tax out there. This should always be remembered by those who advocate in favor of taxes. The government is already heavily taxing the population through inflation, and it can be loosely considered as a form of income tax too. Ironically, Bitcoin allows you to avoid being taxed by inflation

Even bitcoin would be banned by the government but still people would really use it no matter what specially on those who hardly believe on its potential and usefulness  since bitcoin transactions are untraceable we could able to make transactions cant be noticed by the government.Bitcoin would really kill income tax if all people of certain country would use it.