IGI marriage records

Just a simple question.

I understand that the present method probably is quicker and saves time for the original document-recorder person in 99% of the time; but WHY does that person (who creates these documents) NOT bother to include the names of the parents of the newlyweds ???? If the parent's names are not on the record or illegible, that can be noted on the IGI just as easily.

Aren't we ALL grateful when we do find an IGI with that information? Think of the countless MILLIONS of wasted hours saved for the researcher/ descendants.

The information is ALREADY there in 99% of the time.

Why does the person who needs this vital information about their ancestors have to send for that SAME microfilm and spend countless hours of of DUPLICATE research time in doing this?

Just a thought.