Bethan was breastfed until 33 months, and has a weak chest from bronchiolitus that she caught at 1, and has eczema and a nut allergy that she needs an epi-pen for. If she gets a cold, it goes to her chest, so she's ended up with chest infections.
However, I was FF, and have full body eczema to the point of me being unable to leave the house for months at a time, I'm allergic to most food groups, and lots of life groups, too (dustmites, all animals, pollens, trees etc). I have problems with processing food, and have stomach cramps and upset stomach regularly (possibly IBS apprently). I have a very restricted lifestyle, and will never be able to lead a normal life.
So what I'm trying to say, is that given her genetics, she's done awfully well, so you have to take all of it into account. I'm glad I breastfed; even though we struggled like hell, I'd never take it back, because if that factored even the tiniest bit in meaning she doesn't have to deal with as much crap as I do, it was worth it.