Corns brumate in the wild, but this is mainly a mechanism that they evolved because their prey animals are fewer in numbers during the winter. Being able to stay relatively dormant (although it's not as complete a shutdown as hibernation) helps the snake eat less during the months of slim pickings. As you guarantee their food all year round, there's no practical need for them to brumate in captivity.
If you decide to breed one day, brumation will allow you a measure of control over when they're ready for mating in the Spring. And if you have a warehouse full of them, putting them down to brumate for a couple of months will give you a well-deserved holiday!