Nipple Sensitivity/Pleasure

In media whether it’s on tv, a movie, book, pornography etc. it *always* portrays women as showing signs of pleasure when their nipples are stimulated somehow.

I’ve never felt anything in my nipples except pain when they’re very cold. Some guys I have been with sucked and licked them but I felt nothing. On the other hand, when I licked & sucked their nipples they seemed to enjoy it a lot. I just feel awkward when they are stimulating mine and I’m not making any response.

I looked on Google and there are women out their whom nipple/breast stimulation does nothing for but I’m also curious if anyone on here has the same thing.