What is the atheist basis for being against drinking sperm that isn't std positive?

If you're an atheist and you don't have a desire or don't drink soerm, what exactly is your moral objection to not drinking sperm?

Let's look at this; there's no consequences morally speaking and it's not hurting anyone, and sperm is nutritional value.

What is the atheist basis for being against drinking sperm that isn't std positive?
Post Opinion