Mine are only sensitive when I’m ovulating and on my period and that’s the only time I really want my bf to play with them. Other than that I don’t feel anything either. Don’t worry you’re not the only one lol. Plus I’m like an H cup, and big tits in real life are kind of a pain in the ass compared to the way they’re presented in manhwa/manga.
Mine are SUPER sensitive in the bad way. I don't like them being played with because the feeling is so uncomfortable. I actually asked my partner to refrain from sneak attack pinching them Σ(っ°Д °;)っ
I used to enjoy it but at some point, the good feeling became bad feeling. However if I'm super SUPER turned on, then it can be nice. Smutwhas definitely overdo it for effect.
Honestly very dependent on the woman, and the technique used. Mine are literally so sensitive it's like getting touched downstairs, but only when gently rubbed between knuckles and not fingertips. And getting pinched or grabbed to hard is so painful I cry, but overtime they can be made sensitive but it's a 50/50 whether it'll be a good sensitive or bad
Light touches stimulate me more than normal or heavy touching. Also idk why, my hubby likes to hug me from behind and pinch my nipples when I'm sleeping, it wakes me up and feels good/drives me crazy especially when I'm ovulating, but literally the only time nipple play really works right off the bat for me. Like even light touching it takes build up for me to start feeling something. Not sure why my body is more sensitive when I'm unconscious, makes me understand somnophilia a bit.

Curious question, does boob play actually feel good for some girls? When I have sex and he plays with mine I don’t really feel anything