Of course everything isn't sunshine and roses, but if there's one thing I believe it's that there's no point dwelling on the negatives that you can't change. Certainly some people won't be embraced with open arms for coming out, but I think it's important for them to realize that that has nothing to do with them and more to do with how F**%ed up the people in their lives might be. By showing them that some people are accepted, that some families and friends DO realize what's important it not only gives them hope, but it gives them perspective. It says, "it's fine for some people and it can be fine for me as well".
This hopeful message shouldn't just be directed at gays in the first place. It should be directed at the average person. Over and over again families should see that the proper, loving response to someone coming out is one of acceptance and not ostracism. If we can make the bigots and a$%holes feel like the shameful minority, GOOD!
The other point is to actually remove the self-pitying, internalized homophobic crutch that a lot of gay people do have. By showing them that other people are getting along just fine I think it can often act as a kick in the backside to show them that they can and should overcome their own problems, because when it comes down to it no one is responsible for anyone else's happiness but the person themselves. There comes a point when you have to say, "F*&) the bitterness and bad luck" and get on with living the life you want to have.
So if a little "positive propaganda" can give these people encouragement and hope, if it can raise the level at which they set their sights (even if they don't ever reach that level), if it can make them say "I want THAT life and I'm going to go and get it", then I say let's give it to them! Let's show them this message instead of "yeah, your life sucks, the people in your life sucks, and I guess you'll just have to accept it".
Still, excellent point, Menzo. I definitely see where you're coming from even though I don't quite agree.
-Kevin