There’s a mathematical theory that claims 26 is the perfect age for marriage. According to the 37% rule, when you have to screen a lot of options with limited time, it’s best to choose one after you’ve considered 37% of them. If you’re between the ages of 18 and 40 while looking for love, you’ll theoretically make the best choice 37% of the way through– at age 26. Before then, you might miss out on the better options, and after that, your chances decrease as higher-quality partners become less available. Source