Sexual violence isn't about sex - it's about domination. That's why it's such a frequent weapon of war. That's why little babies and old nuns get raped - and not just beautiful 20 year old women. In non-patriarchal cultures, there is functionally no rape.

https://medium.com/inside-of-elle-beau/rape-is-unknown-in-some-cultures-7c8629c4fa0f