Jemart,
you are missing the point, all babies have all thier teeth from before they are born. they errupt through the gums at varying ages, but all babies have teeth, you just can't see them with out an xray until they have cut through the gums.
And your assertion that your DD grew out of the need for breastmilk is rubbish. She may have been eating plenty of solid food and have lots of teeth through, but that doesn't mean she didn't need breastmilk any more. Breastmilk is designed to be the main source of nutrition for the first 12 - 18 months, up til then solid foods are complimentary.
But there is more to breastfeeding than nutrition. Breastmilk provides immune factors to support the immature immune system (which is not fully developed and "stand alone" until around the age of 5) and breastfeeding helps to strengthen oral/facial muscles which help the facial bones grow correctly and help teeth come in straight, resulting in clear speech and less chance of needing orthodontic correction in later life.
Also, don't underestimate the importance comfort. Giving a baby/toddler comfort is very important, nursing soothes teething pain, eases a child through illness (not just soothing them but helping to keep them hydrated and nourished when they are not eating or drinking much) and calms a tired toddler back to sleep in the night. None of these things is insignificant, so don't try to dismiss them as wierd, unusual and unneccessary. They are natural, normal and healthy.
The only correct statement you make is; "I can only speak from my own experience of motherhood" If you had done any reading, research or even just thought about it for a little while you would know that babies do not out grow thier need to nurse at 12 (or 10) months of age.