Breastfeeding advice

Please no negative comments. My LO is 14 months and we are still going strong with breastfeeding. I'm ok with it and he seems to love it. We only do first wake up feeding, nap time and bed time. Everything else is sippy cups and regular food. The problem is I'm getting comments from my husband, sister and a few other family members wondering when I'm going to stop and cracking jokes about my LO having to hurry with morning feeding so he could catch the bus to high school one day. I'm beginning to feel like we've gone too long. I dont know what to do. I know he gets all the nutrients he needs daily from everything else I feed him. BF right now is just a comfort thing I think. Help please

EDIT: Thank you all so much for all the words of encouragement, support and for your own stories. So glad I'm not alone.