R treats my breasts the way I treat a nice box of chocolates... no nutritional need, not hungry - but I see them and think 'ooooh! mmmmm - chocolate!'
She even says 'mimi!' in just the same way I would say 'hotel chocolat!'
Sometimes it's hunger, other times comfort / habit (e.g. bed and night time). But during the day it's just cos the likes it. And we're fine with that. We feed on demand at 22 months. She also sticks her hand in and yanks my nipple out. Tbh I find it endearing! I do sometimes say 'in a minute' and make her wait - but it's rare that we're doing anything that can't wait, or be done at the same time as breastfeeding. She's also a nipple twiddler, but that doesn't bother me either.
I agree with everyone else - there's no right or wrong!