Biology insists that a sperm left to itself will never create a human being. Biology also insists that a sperm which fertilizes an egg will create a new human being. Did you miss that week in school?Biology says no such thing. Pro-lifers just lie about that.
And why do they lie?
Because all the other pro-lifers tell the same lie, and sheep bleat along with their fellow sheep.
And because they get a pervy thrill when they lie to advance their fascist control freak agenda.