My first wife did this legally and then some. And after our divorce, NJ Family Court aided and abetted her in shaking me down for every penny. $600K over 20 years, the guy got off cheap.
$600,000 over 20 yrs equals about $30,000 a yr which is not that much considering she is an equal partner in their marriage....besides, perhaps she also is squirrelling away money from nursing home, health expenses, etc..