The teaching, first off, is not - specifically - "every sperm is sacred," although, it must be said, when you’re talking sperm and ova you are talking about essences - our essential selves, which are derived from the deepest parts of our beings, and you are talking about the material which was designed specifically for the purpose of assisting God in the creation of humanity. God loves us into being - we are begotten. Our creation is no accident, but the Love of God made manifest, and the "tools" or "materials" that He uses for that creation - committed love and the mysterious and miraculous products of that love - do, simply by their designation as "tools of God" demand a certain respect and recognition, because they are a great deal more than the equivalent of nasal mucous or earwax. They are the essentials of human creation, and therefore they are of staggering value and import. In THAT sense, yes, every sperm is sacred.

And please remember, folks…what I am trying to communicate here is what I have come to understand through my reading and talking with priests, etc. I’m no expert. I do have a catechim, somewhere…I’ll have to dig it out!