A fine line between asking whether a crime might have been committed, and charging someone with having committed it?
The minute you advocate investigating every miscarriage as a possible homicide, you open the door to all kinds of speculations, false accusations, and government investigation for a common natural occurrance.
Deciding that life begins at conception does not make every woman a potential murderer needing investigation. At that point, you give the government unlimited opportunity to charge any female with a crime whenever they have it in for someone.
Not to mention the ridiculous amount of time tying up the court system for nothing.
All in all, it’s a ridiculous argument to use against the life begins at conception stand.
The only reason to argue that life does not begin at conception is to justify abortion.