I disagree with your statements. You are assuming a lot about other people and where they are coming from. In English we have an expression, when you assume, it makes an "ass of me and you". Which is to say, you are sure to turn off any would be clients if you continue to use threads like this to berate men. I neither wonder or care about whether he is saving whatever for his SO.
My "job" is provide the best service I can. If he is less than a perfect lover, so be it. It doesn't mean that he hasn't been generous, well mannered, well-meaning or groomed. I have to remember that as much as I may enjoy it, of course there will be times I don't, but that is why I am getting paid. I am not using my position as an SP to satisfy my personal sex life. If I and when I do, I consider than a very welcomed bonus and luckily I have some great clients who fit that bill.
And that does not mean because he is paying me, he can do whatever he wants. I have very few "bad clients". If someone is doing something wrong or hurts, I tell them right away. But those clients are thankfully in the minority.
As well, (as you have implied in other posts), I do not believe by simply reading or educating yourself in the erotic arts as you put it, makes one a better lover. This is one area where practice supercedes any book learning and to imply that if someone does not educate themselves does not make them a good lover, whatever, again is with a "put down" tone to both hobbyiests and SPs on this board.
I am not trying to give you grief Amanda, but you may not be aware of the fact that you are may be alienating the very population you hope to get as clientele on the hobbyiest side and support you hope to get from the SP side. If I have come across too harsh, I apologize, but this thread is supposed to be about breasts!
Now as far as breast play goes, I like my nipples to be kissed, licked and sucked very gently - doucement!! I do not like to be handled rough or pinched or bitten. If someone gets a little rough, I ask them to stop. I am pleased to say more often than not, a gentleman is happy to comply with my requests. I am very lucky in that I do not get a lot of "bad" clients.
During a duo, I love to massage a ladies' breasts, especially if they're natural.