I went down a rabbit hole on this one. I think the age may be irrelevant, or only correlated with children. At least Kidman and Holmes left him over Scientology. They were trying to avoid having their kids indoctrinated. That worked for Holmes, backfired on Kidman. It might have worked for Holmes because it backfired on Kidman. https://www.mercurynews.com/2024/06/28/after-tom-cruise-once-denied-abandoning-suri-she-seems-to-get-the-last-word/