Contrary to what many might believe, prenuptial and postnuptial agreements are a good thing. With the number of couples getting divorced these days hovering around 40 to 50 percent, it should make a lot of sense to want to protect yourself and your assets if you do end up following in the footsteps of millions of Americans. Prenuptial agreements can be useful, but if you do not create such a contract before you tie the knot, postnuptial agreements can be just as good.