Parents buy them and the kids keep the money from the sale. Kids say they like it because it gives them something to do. Pokemon is harmless. Let's start at the beginning. That's an oxymoron.
Monsters are monsters.
Your children are being duped into believing black is white. Surely, that must just mean there are a lot of them. This, at a time when our children are struggling to make sense of the real world in which they live - in which there are inconsistencies enough. Parents must be sleeping, because no parent who cares about their child's moral and emotional development would permit it. Now there's a blueprint for the future.