I think it all depends on who is asking and how they ask. I'm all for a polite no thank you and dropping it there but where I work there are treats ad nauseam this time of year and some of the people bringing them or baking them can be very insistent that you have "just one" or "a little taste" and after all you "don't want to hurt my feelings do you?" When I get put in this position I agree with sed777, I'm not going to sacrifice all my hard work and effort to save their feelings. I had a lady inform me that I was going to eat her baking and like it and I had no choice in the matter. At this point I just walked away. Why argue with them? As we are the minority in just about every situation we have to expect the majority (who follow CW) will always push their views on us, blatantly or inadvertently.
My body, My call. End of story!
“There are only two options regarding commitment, You’re either in or your out. There’s no such thing as life in between.” – Anonymous
"Das Beste oder nichts" - Gottlieb Wilhelm Daimler