There have been studies done, and they have found that a biologically unrelated adult male living in the home is the single biggest threat to a child's life. Married stepfathers are a lower risk than the casual shack-up boyfriends, but still a higher risk than natural fathers. Many male mammals have an instinct to kill the offspring of other males, and humans are no exception.
I've seen those studies too. Sad, but true.
It would be extremely interesting to know just who or what made those studies and exactly what their qualifications were for making such a study.
Humans may be classified as mamals at the very basic level of our development, but the very essence of being human is our ability to allow conscience and reason to over rule instinct.
Judging from a couple of cases before the Courts today, it would appear that the natural father is very likely to murder the Mother of his child along with his child that she is carrying.
Step parents as a rule, happen by just in time to retrieve ,treasure and nourish those that another man just tossed aside as junk. You have heard the phrase, "one man's junk, is another man's treasure"havent you?
The decision to abort babies is never made by a step parent, but by the natural parent.
And in this case there apparently were at least two biologically unrelated adult males living in that home with that child. I wonder if the "step-father" in this case was legally married to the little girl's mother or if this is one of those usual common-law situations where the men just moved in.