
You can only control how you feel about it yourself. I came out to a couple of my sisters pretty easily, being really close, but was super nervous about my parents, because they were really religious. I didn't even try until after my mother had passed away, and I was going somewhere with my dad - they were talking about same-sex marriage on the radio, and I got up the nerve to ask him what he'd think if I married a girl, and he said something along the lines of 'I wouldn't be surprised. Your mother told me that years ago' then elaborated that he basically was cool with it. A lot of worry for no reason, apparently. I certainly can't say that your experience will be good like that, and it could in fact be as bad as you fear, but there is nothing you can do to change their minds, other than maybe be fabulous out in the open...
After reading this, I get a sudden urge to come out to my big brother, hoping that he would have the same response as Manseok... But that's so fucking stupid, he would kick me out of the house lol