Recent cuts in welfare make it impossible for a family to survive. Many of these women are single mothers and economically viable alternatives are rare. These changes in welfare will mean more women will turn to prostitution and there will be more violence. It's always economic, whether it is to prevent you and your children from starving or to get a better life. For many it improves their lifestyle.
Some women do choose to go into prostitution to have a better life.
The point being made is that the safety of all women is jeopardized. The accusation of a woman being called a whore to dismiss violence she has incurred is an undercurrent in our society. All our lives we are taught that a whore is no good and this is ingrained into our society. It has been shown that if prostitute women are disqualified from protection, then simply any women can be. Bias against women, including the labeling and devaluing of rape victims as undeserving pervades the criminal justice system and prevent women from getting the protection and justice we all deserve.