Sam, I think its a "done" thing mainly because they recommend you move to toddler formula, which is not that great for kids, lots of sugar and stuff yeah? I've never thought my kids needed it, because by the time they are 1, they have a pretty established diet and don't need the extra nutrients. DS takes vitamins as well and has done since he was 2, which are a HELL of a lot cheaper than formula.
Each to their own of course, but I just don't think its necessary :)

