Men can, and too often, do much worse than kill you and eat you.
So team bear, who is living his life in his woods where I have chosen to walk, not team random man who I have no choice but to share the human environment.
And my DH does know a rapist, he just doesn't know he knows one. All he knows is there is a certain relative that we don't socialise with if it can be avoided.
If I told him, then DH would be a murderer. And DH would go to prison and I would not be able to live with the guilt of having caused that.