yeah "possessiveness" has absolutely no basis in anything reasonable, let's villainize it too while we're pretending not to alienate anything about ourselves lol
And no, possessiveness in regards to other humans is honestly really bad. It may every so often feel good for a moment, in a 'they want me' sort of feel. But that has a really bad tendency to go off the rails and turn violent quickly.
There's ways to do sexuality and relationships healthy. Possessiveness, jealousy, shame, and other similar emotions aren't healthy for anyone involved.
I suppose you think you know better than thousands of psychologists who have explained the difference between adaptive and maladaptive. or perhaps you know better than billions of years of evolution. just because you don't understand how to bond with someone adaptively doesn't mean that there is no way to bond with someone adaptively. There's a reason why we want to make sure that our partners are actually bonded with us and trustworthy. It doesn't have anything to do with oppression. But your externalization and automatic presumption of pathology tells me a lot about what you must have experienced and what you never got to experience.