It is sad that things have to be that way. Often, children are cut off from unrelated adults because we're so concerned about the possibility of sexual predators. And it's a realistic concern - but still deprives children of social contacts that might be valuable for them.
I drink too much sometimes, too. We all have our failures.
Try being a softball coach. I am on the edge all the time coaching my 8&9 year old girls team. I love the kids, and would never hurt them. It's the parents who know I am fairly well off who I am afraid they will sue me.
Harry's reasoning i am sure is different.