I agree with your sentiments completely. How often do we hear comments about how our children are not our "real" children? Or hear people ask what happened to the "real" parents? I've kind of developed a "water off a duck's back" attitude to those types of comments, but if anything will make you stand up to declare your own "realness," it's being faced with someone who just won't accept what you know to be fact: I wake up at night with my son when he cries. I feed him in the morning. I clean his cuts and scrapes and sing stupid songs with him. Does he think I'm real? You bet.
Amen!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I couldn't have said it better!!