The hugging and kissing issue is an interesting one. My parents did it when we were quite young, but I think they stopped as soon as they thought we might be embarrassed by it, probably when we were aged seven or so. As a result, I became rather unused to physical affection. But when I was about fifteen, someone from school unexpectedly gave me a really warm hug when saying goodbye. I didn't say anything, but I remember melting inside at how this felt, and from then on I really craved hugs, and insisted on hugging my parents regularly, to their bemusement.
At the age of eleven, I read "The Willow Street Kids", which was a set of true stories about issues such as strangers, bullying; and the last few chapters were about inappropriate touching, secrets, and children being made to kiss bearded old relatives when they didn't want to. It was a whole set of issues I had never thought about at all. Although it didn't describe the worst things that could happen to children in this way, I remember wondering "why is this book making such a big deal about touching?".