Times have changed. You should no longer have “The Talk” but rather an ongoing conversation starting at around age 4 or 5. The internet, the pervasive nature of sexuality in our culture demand that we as Christ followers paint for our kids a clear picture of what sex is and what it is not. Kids need to be able to see their sexuality from a broader worldview so that their idea of sex is not confirmed by the ideas of our culture.
We live in a transient culture like we never seen in history. People change churches, change cities and change jobs with a frequency that is unrivaled. As you look through church history, there was a very strong emphasis on family worship the idea that our kids are spiritually educated by the church primarily is a relatively new idea. These two realities create an atmosphere that is both challenging and dangerous.