what is the point of holly with no berries?

My holly bush/tree, which was in the front garden when we moved in, has never had any berries on it. I guess it's the wrong gender. It just seems to be a support for the jasmine growing up it and over it. 

I think it's finally time to cut it back seriously, to the height of the fence behind it in this photo. I think we can be reluctant to change an existing garden when we take it over but after 10 years I have the confidence to do it! And those poor crocosima are desperate for more sun.