Hmmm ... Sounds to me like a better wife would be the one that doesn't have children of her own in the first place, don't you think? I hear there's always children looking for a good set of rich parents to devote themselves to for some reason or another all over the place, these days.

And if you tire of them, well ... they're not really your kids in the end, are they? You can simply cut them loose, just that easily.