Pruners - I said earlier on that I would be disappointed if my dd's chose to join an organised religion when they are older. That doesn't mean I would cease to love them, accept them and even join them at ceremonies they deemed important (maybe, I'm not entirely sure about that last one)
There's an assumption that religion be treated with a special reverence not afforded to anyother group or organisation. I can imagine my children being teenagers and me raising an eyebrow about their choice of clothing, music, hairstyles, friends, activities etc...but if they came home and told me they believe in god I'm supposed to stand back and not dare question this? Why?
My parenting aim is to bring my children up being as honest as we possibly can be with them and teaching them skills to help them get through life thinking for themselves and making good decisions.
But I accept that it is possible they could come home one day as adults and tell me they believe in god and/or they have joined X church. Since they will be adults, I don't see why I would need to afford their choice any special tip-toeing, and I would hope we'd be able to have interesting discussions and debates about our different beliefs and lack of. Afterall, I have plenty of friends who do believe in god and I manage to get on day-to-day with them.
I imagine, after a few initial 'really?!!?' and 'why?!!?' converations, I'd stand back and let them get on with their lives (provided they weren't being hurt by that decision in anyway). It's possible they will make many decisions that disappoint me - not respecting some of the issues that me and DH find important, participatiing in risky behaviour, dropping out of college? Who knows what it might be? It doesn't mean I'd cease to accept, love and enjoy my adult children. It's quite normal for children to grow up and be different from their parents - isn't it?
I'm sure there are fewer children of atheists who find god and lose touch with their parents than vice versa.
* Disclaimer - when I use the word disappoint, I don't see myself ever shaking my head at my children, pointing my finger and declaring "I am disappointed in you". Think of it more as an inner sigh, accompanied by a yearning that they had chosen a different path.