Behavior differences observed between male and female monkeys

This really did come as surprise to me. I've always been one to believe that female and male humans behave the way they do because it just occured that way some time back in prehistory, and society preserved those traditions. How do you think the insane concept of owning 10 pairs of shoes came to be? It sure as hell wasn't natural selection--just the overwhelming force of herd mentality. But hey, the study says that male monkeys like playing with toy cars and balls while female monkeys prefer dolls and cooking pots. That last female preference is really suspect... But if we assume that this study is correct, what does it mean for gender equality? Are men and women genetically and evolutionarily destined to strive for different joys and goals in life? Think of all the disputes that will re-arise as society upheaves with this powerful, raw study. Should both sexes work? If not, then which one is the homemaker and which one is the breadwinner? Who drives the car? Who can be polygamatic? Toilet seat up or down? Read about it if you don't believe me Tangentially related: On George W. Bush and Monkeys