Even if there is a will, marriage contracts can clarify and reinforce expectations in order to avoid costly litigation that ends up devouring the property. They avoid family obligations. Any couple who wishes to pre-emptively limit the future rights of custody or access to children should think twice before they can commit to a marriage contract. A prenup should not be used to waive maintenance, alimony or spousal maintenance. Keep it in the family. If you are concerned about getting children from a previous relationship than your beneficiaries, be sure to spell it out in a marriage contract.. . . .