My parents are outwardly supportive, but mainly because they have to be (for risk of losing their grandchild). When I was a kid, my dad wasn't around a lot because of shift work...
...but he's one of the most decent, kind people I know. He truly does not understand me or what I'm going through, and I don't think he wants to. I don't want to pressure him, either. He does, however, side with me that the way my marriage ended was not my fault at all -- something I can't get out of my mother who sympathizes far more with my ex for giving up her daughter than she does with me for trying to be a decent single parent and still transition.
Way back when I was a kid, I was sick constantly. Basically, everything revolved around me -- from where we could live, to when we'd go out of town, to what foods we could eat, and so on and so forth. It was absolutely maddening, like being raised in a cage. I couldn't fathom making myself further the center of attention by declaring that I'm a girl. Seriously, though, I didn't figure it mattered anyway -- I kept being told that I wouldn't live another 10 years, and when that came, another 5, and when that came, doctors were scratching their heads in disbelief. I could see, though, how unhappy it would have made everybody, and it isn't in me to cause familial strife for selfish purposes, like having an unusual personal identity. They now know who I am, though, and I can't change my past decisions. I can only imagine how they would have reacted back then, and I guarantee whatever I can come up with would be different than anything they would have actually done, anyhow.