I guess having an over-active immune system can be an advantage at times. My daughter is always sick, and when she gets sick she seems to have a really tough time getting over an illness. I'm hoping that she won't get the autoimmune stuff that I have. My son already seems to be having symptoms, though, and he's only a year and a half older than her, 33.
Its tough seeing your kids end up with the same type of problems that we are suffering with...