Sure, they share qualities in common, but their purposes are essentially different. Similarly, men and women are equal but different. This is how we were created, like it or not. We have differing purposes in life. Men are generally better at math while women usually excel in English skills.
Men are naturally bigger and stronger than women.
We have been given complementary but dissimilar roles in the family. Men are said to be the head of a household while women are the heart. I suppose some women might object to this idea, but I wonder if they have considered the awesome responsibility and privilege of being the heart of a family. Women are the ones endowed with the special duty of creating a loving home and atmosphere for their husband and children. As soon as feminists realize the importance of motherhood, perhaps we can get back to letting men be men and women be women.