I am not naive. I believe that kids who are brought up properly will typically act properly. Will EVERY single frum kid who is brought up properly NEVER commit an aveira? No, and it WOULD be naive to think so. BUT,plenty of kid brought up in extremely separated environments are faced with the same taivos, and you know what – their lack of normal interaction with someone of a different gender, can and does lead to the commission of those same aveiros. They are just more secretive about it. When they rebel, they rebel in spades.
I do have faith in my children, and that faith has never let me down, because THEY have not let me down. I don’t need to watch my adult children 24/7 to know NONE of them will walk into a bar to meet a girl or guy, and in fact, ALL of them think it is very sleazy to sit in a lounge on a shidduch date, where OTHER people are meeting and drinking in order to pick up people.