Why must I make the sandwich?

In class we have been discussing gender roles and stereotypes we have for genders. As we have been talking, I have been believing more and more that stereotypes and gender roles are socially constructed and not a product of human nature. I do believe that human nature may play a minor part in them, but I think it is ultimately social construction. I think it all started because of human nature; girls were more drawn to the pretty pink things and to playing with dolls or pretending to be older while boys were more interested in automobiles and physical activities. I think these differences became blown up and eventually turned into stereotypes. The reason this is more of a social construction is because these stereotypes are purely based on social differences and not individually but as a general whole for that gender.Because of these, females have pressure to be more girly and good looking and less independent than men because these stereotypes have been constructed around the fact that they like pretty and cute things. On the other hand, men must be more athletic and aggressive because their stereotypes were constructed around the fact that they tended to like physical activity and not like the softer, more gentle and pretty play of the girls. Because of these, girls cannot dare to cross the invisible line between their role and the male role. If a girl does something that is maybe viewed as more manly, she is automatically branded a 'tomboy'. Similarly for males; if they do anything girly, they are called 'sissy' or 'fag' simply because their interests are different from the stereotyped male interest. This goes back to why I think the stereotypes are more socially constructed; they are based on a general notion and not on what every single individual is like. As humans, we love to characterize and organize things in our minds and I think this is just an example of that. Instead of everyone seeing the two genders as not overlapping at all and entirely unequal, we must learn to view them simply as different because that is what we all are; different yet equal.