I was thinking of selling my bitcoins for cash. Is it perfectly legal to do so?
It will be depended on the legality of bitcoin and other cryptocurrencies according to your countries, It is perfectly fine to do so. The bitcoin users will be allowed by the local exchange wallet to easily have our bitcoins which will be exchanged into our local fiat currency and we might recover it by remittances or we can transfer it directly to our bank accounts. It is not wrong to sell your bitcoins for cash, but except the huge ownership of the bitcoin can be considered as illegal in your country.