Disagree with Stereotypes

I am taking a class, Mind, Brain, and Evolution at Plymouth State University and we have been reading a book about what men look for in a women and vice versa. The book basically says that is a mans  nature to reproduce and that is all he subconciously thinks about. Then the women are only look for men that can give them their resources. I want to say that times have changed since the caveman era. I believe that women are becoming less and less helpless and dependent on men. Why can't it just be an emotional connection between two people instead of the hidden reality. Do people actual base their relationship on the resources their partner can give them? I hope it is more than that.

I also don't like movies where women play the lesser role and are most of the time more vulnerable than men. Why do they do this?