Looking for an emotional response. If my kids give me reason, I guess I will start spying on them. Just like I wouldn't want my parents reading my diary, I shouldn't be reading theirs (modern version). Unless they gave me cause.
False equivalency, more like monitoring books and magazines read or listening to the kids having a party in the basement. Their internet, texts, messages, and postings are not private like a diary. If they want a digital diary it is a private document not something sent to others.