I know what you mean. I remember being at my half brother and sister-in-laws (who have no kids) house last year when the topic came up she thought the idea of still bfing a 1 year old was gross. Having had slightly more experience with kids then them as my other half brother and sister in law have 3 kids who she breastfed till they were about 18 months I just said to her "have you spent much time with a one year old". They're still babies at that age and as that sister in law pointed out at that age it can also be a big comfort thing especially around sleep time.