i love it, but the "bag" to which you refer, is a plastic bag. the freezer? that you bought at a big box store? or say you bought second hand? that all requires massive amounts of infrastructure. Massive amounts of power. Massive engineering projects to bring you that power.
you're not a hippy just because you store veggies in the freezer.
let kids be kids. when you force kids to be parents, you are stealing their childhood. all you have to do is explain "sex" in bits and pieces, when it's appropriate, and eventually they're ready for the anatomy explanations and maybe you can help soften the trauma of puberty.