You have got to compete with them... you have to be working toward a future of your own. A picture of the future of your own that is contradictory to theirs, in which the things that they want to do have no place because you have been so successful at promoting the idea of sex within marriage... focus on transforming the society to be reinforcing of all these ideas... everywhere... When you do that then you create a climate in which these things really cannot get very far