Hey and welcome!
Taxes may still apply in the long run,especially seeing as to how you need to link your bank account to withdraw or deposit cash into the exchanges. And not the government,but as you have seen,market forces can cause drastic changes in bitcoin's value.
...or you can change BTC for cash via
https://localbitcoins.com/It works like a marketplace where you can agree with someone else on almost any payment.
Or you try to fine someone here
https://bitcointalk.org/index.php?board=53.0