Evolution is take-over of the survivors.
It can be good or bad.
It is what it is.
Whatever trades in those having the most children stand out will be what will dominate the overall character of the next generation.
Who has more children? Rh negatives or Rh positives?
I know four different RH negative women who have married RH positive men. Each of the couples have had two or three children: not a single one with RH negative blood… It’s sad.