There's a regulation that is already functioning for the exchange sites, like in my local exchange,we were required to comply with he KYC Policy and fill up all the information that is necessary. With that rules, we have no choice but to follow and i guess it's just fine because exchange sites are legitimate and they are operating with the license granted by the government.
What I am afraid of to happen, is the time will come that our transaction will be tax..
We cant do anything about that because its been required by the government and exchangers would have no choice but to follow same as you mentioned. Its somehow a good move for exchangers to be registered or legalized because we could assure ourselves on the legitimacy of a certain sites. You said that you were afraid to put or impose taxes on our bitcoin , its an impossible thing to be happen for sure.