Premarital agreements add certainty in the event of divorce. These agreements can predetermine how marital and non-marital assets and debts will be distributed between the spouses and what alimony or spousal support will be paid. They can also protect a spouse's assets from division and preserve them for the spouse's heirs.
If you married without a premarital agreement, it is not too late. You have the option of creating a postnuptial agreement to establish the same property and support obligations.
Consider scheduling an initial consultation with a family law attorney who specializes in this area to discuss your options.