My husband and I are very atheist, but we live in a Catholic country where events such as the confirmation and communion is a rite of passage for most children. I worry about when the time comes for my kids to have their communions. They won't have it, but the schools seem to take the kids for their communions or the confirmation (I don't know which TBH) during schooltime, so it'll be like a day out, and the girls get to wear little wedding dresses and dress up like princesses for the day - even if you're not religious, any little girl would love that. All of their friends will be having it, and talking about it for months (the party they have afterwards is as bi as a wedding reception would be, so it's a huge deal), and my kids will be the only ones not to partake. When you're that age it's not about religion is it, it's about doing what all your friends are doing.
I worry about my kids learning about religion from anyone else, because we choose not to factor it into their lives. The other day my daughter said that the doggy was "in the sky" - I don't know what dog she was talking about, but she'd obviously heard the term from somewhere. I don't mind them learning about religion in school, but my issue is when someone passes it off as the truth, just because they believe it. I do think it's imortant to teach the basics of each religion though, and to be accepting of those that believe and follow them.
TBH I do worry that my kids will want to be religious when they're older. I'm not against religion, but I'd prefer them to not follow a religion, and I feel very strongly about that. But I also realise that I can't dictate how they live, and they need to make the decision for themselves. But it does worry me a little, especially since we have such a huge Catholic influence here.