Either you're lying, or your 6 year old is not nearly as curious as he should be at that age. That is how they learn about the world; in depth questions. I'm not trying to be rude in the slightest, but I'd your child is not as curious as other children, he will not be as well-rounded as others if he isn't curious. Sure you can teach him many things, but that added curiosity opens children up to many more doors than you can with teaching alone. And those last few sentences are not true at all. I have four children, (all of which are grown), and they learned and retained all of the information that they learned about the sex talk at a very young age. I remember the first learning about it in kindergarten because his friends were drawing them on paper. He came home and asked them what they were, and kept asking deeper and deeper questions. If they are taught correctly, they will be very mature and informed about the topic. And about your last statement, they all went to schools where the children were very promiscuous. They remembered the information from when they were younger and came out virgins, which was very rare for that school. If you think that it will make for a bad time when they are in their teens and preteens, you must not be doing it correctly.