It's an enormous leap in logic to go from things removed from public forums to private hard drives, let alone one's mind. The fact that creating boundaries is a difficult and messy business does not mean they're not worth creating, even with the flaws.

Your bizarre, logical, absolutist view of the world is not one the majority of people share. There is a difference between removing the sort of terrible posts that show up on Facebook and thoughts in people's heads. Most people can see the difference. If you can't, I suggest you take some time to consider why other people might see a difference.

You sound like things are in absolutes, black and white, it’s not.

Would you remove child porn off the internet? How about a rape victim’s photos and videos? If you could delete something that would cause people to commit suicide, would you?

Why remove when you can show only to specific audiences, ie. police etc. that can do something more than delete the content.

You can delete it and share the information with the proper authorities. In fact that is probably what's done.