Prostitution is legal in Australia.
Now that you've picked yourself off the floor... I agree that there shouldn't be any stigma on those who go simply because they can't get sex from anywhere else. Or if they feel that the sex is merely part of a transaction - sex for money. It's a win for each.
Where prostitution is legalised, it's not always a case of sexual slavery. It's a choice many women go into for a variety of reasons - but it's usually money.