I actually agree with you, but the problem is that too many Christians, especially those who are very religious in a fundamental way, see two of these aspects as completely linked together.
It’s clear that the Idea of Jesus being conceived the normal way is distasteful for them, to put it mildly. I even had religion teacher claiming that Mary remained virgin for her entire life.
Again agree, but we’re talking 1st century Israel here. Did that knowledge exist back then?
We either accept it was the usual way or that God or an archangel put it there. Did they somehow magic it out of thin air or…(best not to spell it out). Would impregnation by holy spirit break laws of nature?
How would that happen? Are you suggesting artificial insemination?