Hey, you tried cute first.
As for my reply to the last, see my item 1) in post 83 above.
Well, I considered this reply to have started the cuteness:
Knowledge of biology has progressed.
God leads His Church in these teachings. Human knowledge of biology is not necessary for the Holy Spirit to guide the moral theology of the Church.
Besides the obvious: the teaching regarding the Onan incident has nothing whatsoever to do with your assertions about human understanding of the biology involved.