It's
totally about them.
Mind you, I haven't come out yet to family but I have a pretty good idea of their reaction, and it won't be supportive. How do I know this? Let me count the ways, LOL!
Suffice it to say my whole life I've shaken their neat, tidy, little boring lives. I *do* things. Cool things. I've lived abroad, I've run 2 marathons, I've owned a business, I bought a huge honkin' un-green RV, I write novels, I figure skate, I have a doctorate, I own ranch land in Texas (for my retirement)....nothing most people would consider abnormal in the least, but my family drives me crazy because *they* choose to stay home, not travel, and not really do anything but tend their gardens and watch TV. It shakes their complacency that maybe their lives are boring, so rather than get off their butts and go do something, they ridicule me.

Now this. They'll likely just think it's another one of my phases, schemes, moments of craziness, like everything else. But: I do have reason to wonder about my siblings and their own gender and orientation, things that possibly may be there that I see, and their histories, and I'm concerned that this may bring out their own issues that are deeply closeted and I don't expect it to be pretty...
Jay