Worldwide, especially in my place, must sell it for profit rather than always keep it!
The government always forbids the use and play bitcoin so that it can not grow fully potential in my place. Surely it remains an advantage if there is a transaction rotation for bitcoin in my country to live.
To avoid revealing any personal information (signing up for an account at an exchange, linking to bank account, etc) and maintain complete secrecy the seller might accept a lower exchange rate than the averages.