My dw has them, and it seems to be a genetic trait in her family. My ds has them as well (different biological/genetic families). He does have asthma, and we have sought for some time some kind of allergy explanation, but so far (even after an allergy doc and a few types of allergy testing, visits to a practitioner of applied kinesiology, and eliminating things from his diet), things remain unclear.
Anyway, I think ds is adorable. He is so handsome. I don't know if other people always see past the circles under his eyes and his slack jaw and drooling (he has low muscle tone, and also developmental delays). I totally get how upsetting that is. Everyone is always goo-goo-ga-ga over dfd who has a "gerber baby" look, but in my opinion, ds is about as handsome as little boys come but still gets maybe 1/8 of the compliments dfd gets.
I'm pro-adoption reform, but not anti-adoption.