This will not happen. No government will say "oh look there is this thing called Bitcoin, we should forget about all the millions income taxes bring us and let it be a thing of the past". So there will always be an income tax. Generating income and not paying that is and will be in the future illegal. If you think Bitcoin might help you to not pay it, then this is your opinion, but it is still not allowed and pleas tell nobody anything else
You are not correct on this
A few governments are essentially doing something to that tune. You obviously miss one important thing, i.e. that it cuts both ways. More precise, if a government openly declares Bitcoin as a taxable asset, it inadvertently but unequivocally admits that Bitcoin is perfectly legit since you can't possibly tax something which is illegal. And the governments in question are not going to do this (at least, not until there is wide-scale adoption among masses), and thereby Bitcoin might remain factually tax-exempt in these countries
Maybe you have a hard time understanding this, but positivezero is talking about the abolishment of all income taxes, just because of Bitcoin. This will never happen and this also has nothing to do with the legal status or taxability of Bitcoin
And how does that make your point more valid?
Many governments across the world are heavily engaged in the lives of ordinary people, and they are often looked at as the guardians for the blind masses that need a shepherd ("all authority comes from God"). If they accept Bitcoin (through taxes or otherwise), that would mean endorsing its use by population. Who will be held responsible if folks start pouring their hard-earned money into Bitcoin and Bitcoin collapses soon thereafter? That seems to be the reason why governments are trying to distance from cryptocurrencoes, even if it means that some relatively small group of people is not going to pay any taxes on their earnings
It's not possible to put a tax on bitcoin transaction. If the government decides to put a tax on Bitcoin transaction, it will be a big headache for govt. They will get a lot of problems, and they will struggle a lot to control this Bitcoin trasnsaction. If they decided to collect the tax, then bitcoin banks must open. Then only the govt can able to track the record. I think this much risk govt will not take. But if bitcoin transaction will increase in all sectors yes BTC will kill income tax
They don't have to tax Bitcoin transactions specifically
All they need to do is to make legal an income earned through Bitcoin operations (that basically means legalizing Bitcoin as I said earlier). But if they legalize this income, in most jurisdictions that would effectively imply that you have to pay an income tax on capita gains obtained by buying and selling coins. And to make you pay this tax (i.e. catch you if you are going for tax evasion), they just need to control fiat in and outs that can be used to go into Bitcoin and exit from it
it's more easy than it seems, they just need to tax the exchange directly, then the exchange will apply a higher fee on your deposit or simply when you convert in fiat
this would be the best solution for them to avoid tax evasion, instead of chasing the bitcoin addresses, which is impossible
How are you going to tax services that exist only in cyberspace or can easily move to more tax-friendly (or tax-hostile) countries?