Paying tax on bitcoin transactions would mean legitimizing that transaction as the government will directly be involved. I know many people here want the various governments of the world to legitimize bitcoin, so they will gladly want to be taxed and enslaved by the same system Satoshi wanted to do away with. Bitcoin is decentralized and should be allowed so. There are other avenues from which the governments can get their taxes/revenue from the people.
I think if Taxes are imposed in any one's country for getting profit from crypto than he should pay taxes to govt because by doing he will abide by law and his money will not be freezed by govt.
If one would want to avoid any complications, then it is really just best to follow the rules. Tax evaders are posecuted by the law and unless you want to become a criminal, you must pay the taxes even if it is against your will and wpuld wish to spend it on other things. Whether taxes should be imposed at all is another question and is up for debate but theres really no choice once it is imposed by the government.