I do agree with this. However, my book club recently read a book called 'The Unexpected Legacy of Divorce' by Judith Wallerstein. She is a social worker in....the San Francisco area if memory serves. Anyway, she founded a center to assist families being affected by divorce and followed children for 25 years to see what the long term effects on these kids were.
Her overall assessment was that in general, with few exceptions, outcomes were better for the children if the parents stayed together for their sakes. However, the book was published in 2001 and it was the findings of a 25 year study. Meaning the children she was talking about experienced divorce in the early 70's. I image many things have changed since then.
I understood and agreed with some of her points but the majority of her conclusions I though were hogwash. The case studies she used felt very cherry picked to me and she seemed to contradict herself quite a bit. It was a fairly interesting read though.