Does boob size really matter?

Hi men! Genuine question from someone who’s always been told (by friends and previous partners) “boobs are boobs” and that they are attractive regardless of cup size; do men still find small boobs attractive? If a guy is dating a woman with small boobs, will he probably wish or fantasise that her boobs are bigger? As a woman with small breasts I want to believe I am not lacking, but it’s very difficult as I feel like people just say it to make me feel better.