What if more divorces = more children from different combo neshamas?
Like this man and woman had children with their unified neshamot.
And now when they remarry they will unite with another person to have children whose souls wouldn’t have been brought down otherwise.
Then again maybe having more divorces equates to less children for each individual overall. And less of a chance to have more children in the next marriage, if that, since the years spent during a divorce and dating again may reduce the frame of fertile years.