Are they concrete? Pre-nuptials is a sensible arrangement because too often someone ends up wiped out if things don’t work out.
Pre-nuptials protects the individuals after a marriage particularly if one of the parties enters into a marriage heavily cashed up. This is so if there are children pre-marriage who will be affected by a new wedding.
It is true women hunt down cashed up men and equally men hunt down cashed up women. So, to protect the hunted a pre-nuptial is sensible.