Our societies are populated by people whose bodies have been oppressed by laws that refuse to acknowledge the woman as a full human being; homophobic laws; and even laws that allow loopholes for sexual impropriety. So, some writers assert their humanity by speaking about their bodies. It is a form of activism, of self-care and self-love; it is therapy, an effort against insanity.
Let me say this: writing a poem somehow saves me. In the sense that, an animal of experience has been let out its cage, has been given freedom: an experience has left me so it loses the power to taunt me. In giving my experience the luxury of language, I have freed it and in turn freed myself. For instance, writing about my depression has greatly helped me cope with it.