I've been wondering about this. Are blankies etc really progressions from teh breast/mummy or are they substitutes? if kids get to choose their own weaning time, do they still use these things?
Anyway, I don't think there's a right or wrong here - just whatever's right for a particular mother/child unit.
I don't know if I'd breastfeed for so long - haven't been there yet. But 5 years ago I would have been apalled at the idea of breastfeeding a 2 year old, and now I've done that