Culture Watch: Would You Marry Your Spouse’s Sibling In The Eventuality Of Death?

We had this discussion in my office earlier today, and one guy told us that his “culture” allows him to marry his brother’s wife in eventuality of death and I really find this aspect of his culture disgusting! Now no one prays for death but it somehow just happens. My question goes: if your culture dictates that you marry your spouse’s brother or sister in the eventuality of death, would you do it?