The way I see it, sex is a sort of portal to another world. This sounds a bit weird, but it really does and should have a great deal of meaning behind it, as it is/was central to our species. If it becomes mundane for someone, this really does ruin a lot of that person's life. Even if you completely remove the judgment element. If sex doesn't occur in the context of a love relationship, it's just uncanny territory. It comes with some emptiness.
There's a proper and healthy way to live. This is from my life experience. Stray too much off-course and you will experience consequences. It's just the way things are.
it is as gently and friendly of a warning as it could be.
i would say rather less nicely: people! don't be degenerate! it does not worth it. it causes harm to you, to neighbours, to bystanders too, even if you dont intend.