I am really impressed with my mum as she breast feed all five us. I was only breast feed for a sort time (I am not sure how long) because my mum got Kidney stones and was really sick and lost a lot of weight. I was then given a cup instead of a bottle so I am guessing thats why I sucked my thumb for so long as a result of not having something to suck (my mum didn't belive in using pacifers)