For years my parents have been not so subtley pushing us toward adoption (open EVEN!!!) My in-laws cornered me once while visiting last year and my soft spoken and VERY non interfereing in-laws tried to hard sell me on the idea of adopting. I was all I could do to come up with valid reasons why we wouldn't. they finally made me promise to at least look into it. and I came up with a good diversion and delay to give us time to get a placement. I told them that we promised that if we weren't pg by the time I was 30, that we'd seriously pursue adoption.
WHAT THEY DIDN'T KNOW......and still DON'T .....is that we were ALREADY in the process!!!!!!!!.....
We don't plan on telling any family until a baby is actually placed in our home. It would hurt to bad to announce something and then have to take it back. I live in a very small town and news travels. ...so it really could be a year later and I'd still be explaining to people that it fell through. Too rough on my emotions. Only my closest friends know and people who have NO contact at all with my family and don't even know who they are.
If I thought they weren't supportive of adoption, then I would probably tell them sooner and attempt to educate them.