Testosterone is the male sex hormone, which is essential for the creation of female sex hormones, i. e. female sex hormones are only obtained by conversion from male ones. Testosterone is synthesized in the ovaries and adrenal glands and has a great need for women. At the beginning of the cycle, under the influence of FSH, it begins to change into estradiol. So, if you didn't have male sex hormones, you wouldn't have female ones either. In addition, male sex hormones are responsible for your libido and temperament in general. In other words, male sex hormones are pretty crucial for a woman, but only in moderation.