When mistress' best use for you as her slave is that of a human toilet paper holder, you either need to upgrade your slave skills or your mistress.
Whether you like it or not, the 50/50 happiness rule also applies to femdom even if you pride yourself on being the most submissive creature on the planet. In the end, your suffering and devotion must have positive meaning.
Enter the realm of boredom. Mistress may love it to dress you up as a prop and discard you, but if your only thought - even with nipple clamps on - is one of boredom, the game is up.
Suffering, submission, selflessness and devotion are all emotions that can bring about happiness, one way or another. Boredom is the absence and opposite of emotion, positive or negative. The only lesson it teaches you is to move on sooner next time.
Don't ask me about the difference between boredom and bondage, it's a question I cannot answer. The best I can do is to explain that to me boredom equals loneliness while bondage symbolizes two people, mistress and slave both surrendering part of who they are in a most complicated manner. If all of this confuses you, no worries, it's cocktails by the beach time for uncollared slaves like me. Loving it.
It's just that today's image resonates with me for two reasons. Those few precious seconds every single day when you are allowed to serve must hurt like hell. Usually that's part of the plan. It's also boring as hell, something even the femdom police frowns upon. Time to up your game.