My sister is an outstanding mama to 5 kids and practiced extended breastfeeding with all of them. They were weaned on average at 20 months or so.
I have an 18 month old son who loves to nurse. I will not be weaning him, he'll stop when he wants to stop. Nursing has been a huge blessing as he had a gut imbalance and really didn't start eating solids until he was closer to a year, but even then he was very picky. He's started consistently eating solids at every meal for about a month now. But, he asks to nurse a lot, usually for comfort or boredom. Sometimes he'll go a couple if hours without nursing, but he usually asks about every 45 minutes, sometimes more often.
She just came for a visit and brought her 4 year old and 9 month old and my son was asking to nurse a lot, because having so many people in the house was out of his element.
My sister pointed out that by offering him the breast so often or allowing him to nurse so often may be depriving him of learning how to cope with stress in other ways ( a hug, a toy, etc ) and that the breast was the easiest solution, but not always the right one. I'm curious on everyone's thought on this? She said when her kids were his age, they could nurse every two hours, but of they wanted to nurse more often, she would try and offer a toy or affection instead.
We also came back from a very stressful out of state visit where he didn't see my husband for 2 weeks and he started playing with the other breast ( nipple ) while nursing, and it clearly seems to be a comfort thing. I haven't stopped but, but my sister said she would never allow her children to do that. Also curious on everyone's thoughts about this too.