The day you realize a woman is sleeping with you merely as a chore to gain access to resources - well, let's just say that's not a very good day.
It only makes sense that women are genetically programmed to seek males who can be good providers for their children. You are to be complimented for your success. You must take measures (i.e., condoms, etc.) to ensure you are not entrapped however.
If you desire offspring, you should seek a woman who will not pursue sex outside your relationship. A woman who falls in love with you is, of course, most suitable. But make no mistake, your success will enhance your attractiveness to any women seeking a mate, even one who falls in love with you.