When their wallets are empty.
Cuz they find someone else who has a bigger wallet.
Many different reasons.
I left mine because he cheated and lied.
My mom left my father because he would beat her.
My stepsister is about to leave her husband because she caught him with another woman in their house....he was naked and drunk.
My stepbrother's wife left him because he was smoking pot and wouldn't hold a job.
A friend of mine left her husband because he was running around with other women.
I suppose there are all sorts of reasons that women leave.
Because they're not faithful. There are many reasons. Did yours leave?