Well it’s not really a victimless activity... it hurts the people involved and they hurt other people etc.
It is dehumanization. You are using your body like a piece of toilet paper. It destroys dignity of the person and reduces them to animal and removes morality from sexual acts.
It is the slippery slope....like with all vice-—you can not have “Justice” (Virtue) when you embrace Vice in your “Justice” system. It is why homosexual “marriage” is an oxymoron and unjust law and defies Reason which is necessary for Just Law.
You can switch the “worldview” of children when they live in toxic cultures where Vice is enshrined in Laws (legal). Vice is normalized. Without Virtue, cultures can not be free.
The first thing Cultural Marxists do to get control is to destroy Virtue in children (control schools and sexualize them before maturity) and promote pornography in the “culture”. Sex is the easiest method to corrupt and destroy people and all long-term productive relationships and the family. Without the family, children will not survive in a healthy way.