Only if you need them to, or prefer the look. “People assume that the more cabinet space you have, the better,” says Bertrand. “But I always remind clients that you’re probably going to fill any cabinets or drawers you have.” That’s not always a good thing. Practically speaking, if you upgrade to ceiling-height cabinets you can gain some valuable storage space—or you can potentially save money by buying fewer cabinets and leaving some space for open shelving if you like that look better.