I don't want to say that I "can't" come that way bcs I am hoping one day I will, it just hasn't happened so far.
Sometimes I will push him away bcs he's to direct and making the stimulation way too intense to support...not orgasmic at all, more annoying than anything.
Other times, it's just "boring" in the sense that the stimulation is repetitive and his heart isn't in it, so it is reflected in how well he is working it. Having him sort of lean his head on my leg as he does oral and seeing him down there doing the same thing that doesn't work over and over...sort of makes me feel guilty of asking him to do it so I want him to stop.
Sometimes I just don't feel his tongue action very well, I have to be super concentrated to feel it, so if I don't feel much for a long period I will want to do something else.
One day, one day! I won't have to ask for oral (I've had it maybe 2x this year so far but I give him head minimum twice a week), it'll come from him and he'll be as passionate about giving it to me as I am at giving him head. He doesn't know how lucky he is