Why is it wrong to use my data for training and how would I know it was happening?

Hi Friends,I ask these questions out of genuine curiosity and because I don't have a great answer when they come up in discussions.First let me say, I work extremely hard to not enter Personally Identifiable Information (PII) into any public AI system. I also strongly encourage others not to and work to teach best practices around how NOT to use PII. The reasons why this is bad are obvious.This said...and thinking along the lines of Wikipedia in its early stages...why is it frowned upon to think that things we create with AI (like a rubric, a lesson plan, differentiation and scaffolding materials, an app to help assign the monthly duty roster, etc.) are in turn used to help train the data of the future? If we are opposed to putting our good things into the world and all that is left is biased, poor-quality, or downright wrong data...it doesn't seem like trying to protect what's ours helps the greater good.Additionally, and seriously wondering, how would I ever know if a rubric I created or an assessment I developed for my classroom WAS, in fact, used as training data?