Of course you are frustrated and uncomfortable, I want you constantly reminded that you belong to me.
With a keyholder, and that keyholder being my wife, it means my route to pleasure is to basically push her buttons. She does a good enough job of reminding me that I belong to her, either by means of the key on her neck, or grabbing her property and giving it a good fondle “because it’s mine and I can play with it whenever I like”. This fondle usually ends with me nearly leaking cum, buckling knees and her laughing at the power of it all.
Constantly reminded that I am hers, her plaything, her toy, her delight. I love it like this.