Quoting Lorrilove:" Just seeing how other people feel about the whole breastfeeding a four year old... DR phill has an episode about it on today. Opinions?"
Whatever floats their boat.
I wouldnt do it, but I don't believe it causes any harm for the child at all. I would rather him drink breast milk out of a cup, if anything....just to avoid stares and rude remarks from my peers and his.
the health benefits continue for as long as you nurse. I firmly believe in child led weaning, whether its 1, 2, or 7 years... the average age of natural weaning is 2-7 years... 4 is on the low end of that spectrum.