Expectation vs Submission

I came to a realization overnight.  I've been resenting my slaves' expectations of me.  It's easy to conflate want, desire and expectation, so I will try to differentiate them, and explicate why it bothers me and triggers resentment.

Slaves should want.  They should desire.  They can express these things without it being an issue, in fact it's an extremely pleasurable thing to hear one's slaves' wants and desires.  Where it becomes an issue is when wants automatically turn into expectations.  It is appropriate and reasonable for a Master to expect things from a slave.  Putting an expectation on somebody holds them to it because it creates in them a desire not to disappoint.  And this desire not to disappoint is extremely important in the submissive's psyche.  But when the tables are reversed, and the Master becomes expected not to disappoint, the power is suddenly in the hands of the slave, the wrong hands. 

Of course this is an issue to the Master.  Loving his slaves, he doesn't want to disappoint, yet he doesn't want to submit to their expectations either, resulting in a catch 22 situation.,  But it's as problematic for the slave, because she fundamentally wants the Master to want, and inside she knows if he does it under expectation it's not 100% his want and desire.  As a result, the satisfaction of the expectation doesn't actually satisfy, and leads to more expectations.  The final situation created is one of the slave topping from the bottom, and being unhappy because at root she doesn't want that.  At root she needs to submit to the Master, but she can only doing that by wanting, desiring everything, and expecting nothing.  In this way everything she gets is a gift of her Master, and only in receiving gifts from her Master is she really satisfied.   Of course an action is required from her Master as well, and in some ways this may be the a priori, that the Master refrain from the desire not to disappoint, because disappointment is the necessary impetus to change that trains the slave.