Many regions do not accept bitcoins now. It may take a while to adapt bitcoins in the regions. Hence, exchange the bitcoin into your local currency and use it for all your purposes.
Many of the countries are still not accepting bitcoins but there are some countries in which the accepting of bitcoin has started for online shopping. But if you have a bitcoin and you want to buy somethings on this you can easily transform bitcoins into your desire currency through online various exchanges. Its not a difficult task for anyone. Because it is a crypto currency and it easy change to any currency anywhere.
Selling bitcoins and getting converted to local currency is not a big deal now as you can easily do it on localbitcoins and if you don't want to convert then you also have an choice of using bitcoin debit card where you can directly use it for online as well as offline shopping and for me that is the best option to spend my bitcoins on shopping.