The sad thing is, that the government will continue to tax us no matter where we keep our assets or where we use Bitcoin as a currency. Taxing is everywhere and is present in every purchase that we do because we all know that businesses that sell our daily necessities don't accept Bitcoin is still regulated by the government. If there will be more establishments and businesses that will accept Bitcoin, I think we can quite feel the financial freedom that we want.
There is nothing sad about paying taxes especially when this tax money is being used to provide all the required public services that enable you as a citizen of that state or country to enjoy peace and security.
Assuming you are living in a country full of insecurities as a result of government negligence, you will not be able to enjoy having your btc with you because you won't feel secure enough. Also if people don't pay tax and the government can not afford to provide the needed security, having financial freedom will be meaningless.
You can only be sad when you pay tax and the money is not utilized in the right way.
There is indeed nothing wrong with taxes used for public services in a smart way. It helps all individuals and society as a whole.
Problem is with a decentralized payment system governments will lose track of payment flows and it will be much more difficult to tax. Possibilities to dodge taxes will be endless.
Also it will be very hard to perform efficient monetary policies when there is nobody in charge of the macro economic movements. Money printing can be a bitch but it can also give air to your economy