In my life is has come down to more of a preference to the lady. Some don't seem to care, some seem to enjoy it, some have a rather bad gag reflex and simply can't help it, and some must think it is freakin delicious. I always just assumed it was kinda like guys who dive into eating vs the lickers who seem afraid of the smell/taste of the lady bits.
Personally, I have always been more concerned about the moments AFTER you finish. Does she wipe it off with a towel but still put that pup back in for a nice after slosh, does she suck it down and keep on chuggin until you pry her off, or does she act like its a coiled snake and run after you pop your load? Any amount of after work to me is freakin prime action. But even that is all pref still. I'd never assume a lady didnt enjoy my company simply because she couldnt bring herself to chug my man sauce.