Simpson, married to his childhood sweetheart for almost 19 years, had walked out on his wife and kids and into the arms of a younger woman. The breakup surprised his wife, his friends and even Simpson himself. Looking back, he says, it was a classic midlife crisis.
In that we have already provided the definitive answer to this question elsewhere (relying on rum extract), we assume your follow-up is seeking a non-alcoholic substitute for rum (as extracts can be as alcoholic as or more alcoholic than the spirits they replace).
Because vanilla extract is alcohol-based, substitute another flavored alcohol for the vanilla in a recipe. Some possibilities include rum, coffee-flavored liqueur, amaretto, orange liqueur and framboise, although you can use another type of liquor if its flavor profile fits with the recipe.