Normally I am anti taxation agent. like in my country I do not know what our government is doing with the taxes that is being collected from the masses, they are in charge of the central bank. The money can be mint at anytime if they like. My country is so corrupt to the extent that the people in power mint the money and hide them in tanks in their houses. They should leave the poor masses with taxation. It will be difficult to tax all cryptocurrency transaction.
In my own opinion, those cryptocurrency investors are already paying a decent amount of transaction fees in order to send coins to other wallets so tax is not necessary.
Transaction fees is not a tax and earned by government. Government need income to run their service and i think its acceptable if crypto transaction having taxes. Many taxes that government can collect and i think government should regulate cryptocurrency if government want to earn taxes from crypto transaction