Hi, 2014Bipolar, and welcome! I think even as adults some part of us always wants approval from our parents. But keep in mind that these folks are older and are not up on the findings about mental illness. There's probably no use to argue with them, but try to objectively consider their "ignorance" and move on. You are doing what's right for you, based on medical findings.
By the way, I am bipolar, also.