Similar experience, though I'll say that the worst was dealing with other teenagers that threatened suicide when you banned them. That always took a lot of effort to de-escalate and was a complete drain on personal mental health.

I could deal with porn, shock images, and script kiddie defacements, but having people threaten to kill themselves was human and personal. It hurt, especially when the other person was legitimately having a personal crisis.

I still think about some of these people and wonder if they're okay.