Brrr...
Some cold comments here. (sabotage?)
I dunno but it strikes me that for normal people (non-millionaire, non-celebrity, etc) if you go into a marriage preparing to exit that marriage you probably shouldn't be getting married. After all, shacking up is socially acceptable in most countries these days.

Marriage is supposed to be an emotion-driven commitment; a prenup escape clause suggests the commitment ain't all that deep.
But then, what do I know?
(Shrug)
Hmm, I'm thinking Shakespeare had it right.