Help me understand why to care about my nipples

I am having my breast reduction next Tuesday and cannot wait, but I’m trying to understand why nipples and sensation keep coming up. I am 50 years old and post menopause, 5’8” and 180 pounds. I’m a size 38G and want to go down to no larger than a C. Why does my doctor and everything I read focus so much on the risk of losing your nipples and sensation? I don’t mean I want the medical explanation…I want to understand why I should care??? I don’t care about having nipples (and could always tattoo them, right?) and see no need to have sensation really. What am I missing?