Thank you all for sharing; I had just been thinking about how I would teach children of my own one day, since it seems so difficult to not provide them with what I think the answers are (or might be).
I also agree that it's true actually teaching lack of religion would be just as bad as teaching a religion. In the past, I have been confronted by my aunt, and (separately) by my mother. The reason? My youngest brother and my cousin have both started showing doubt in the Christian faith they were brought up in. They assumed since I was the oldest, and an atheist, that I had been persuading them towards my way of thinking.
In reality, my cousin, who is 2 years younger than I am, actually started doubting and became an atheist even before I was. We had never really discussed it before, but it came up once in conversation a few years ago, and I was surprised to discover that about him. I do enjoy smiling and winking at him during family prayers at Thanksgiving and Christmas, though
My youngest brother has not yet said he's not a Christian, and he hasn't stopped going to church or anything like that. And I have never told him to or tried to convince him of that. The only conversation I can think of having with him that may have influenced him some is that he once asked me why I didn't go to church anymore, and why I "hated God." So I felt the need to explain both why I had come to doubt, and why an atheist cannot be said to "hate God."
He actually took it very well, and while we didn't have any further conversations about it, and haven't to this date, I (and my parents, as evidenced by the fact that they accused me of "turning" him) have noticed that he is becoming a doubter. I don't have any intention of trying to push him down that path; he can come to it on his own or not.
Anyways, thank you all, and keep on sharing if anyone else comes to this thread; I'd be interested in hearing your stories