ok odd questions , but do you enjoy the sex or are you left feeling frustrated?
and i mean no insult by this, who is it more important to? you because you feel your missing something? or your Master because he feels he's not satisfying you maybe as much as he could or a bit of hurt ego?

and if you do enjoy the sex and play but for some reason just cant cum then is it really that important, do you think it will make some big difference (pleasure wise) in anyway?
surely the main thing is that you're both relaxed and enjoy it rather than worrying about if you're going to cum or not and getting yourselves worked up because you cant ..it could end up getting to a point where it will be more mechanical than pleasurable.

ok i dont have that 'problem' so i cant really know for sure how it must feel but im happy to admit that there has been the odd occasion where i havnt cum due to tiredness or some such thing yet it has felt just as good and ive not being left frustrated or anything, and i know quite a few girls who can only cum with one specific thing but theyve always found everything else equally as enjoyable.