I used to always when I was on mix-your-own from a vial twice a day, because I'd go low otherwise (breakfast cereal was my goto - a weetabix with sugar, mmmm, making me hungry just thinking about it!)
These days it depends on what I've had for supper and whether I'm guesstimated my split bolus correctly. I'm more likely to take a correction dose before bed (because I eat too late so there's still carbs on board when I head for bed), though if I've been out drinking (alcohol) or done lots of exercise I will eat a snack to avoid the inevitable overnight low.