Are bottle warmers actually worth buying?

Across the parenting communities we read, opinions split. Many verified-purchase and reddit reviewers call them a lifesaver for fast night feeds with a screaming baby, while others on r/Buyingforbaby and r/BabyBumps note they simply switched to room-temperature or cold milk and skipped the device entirely. If your baby accepts cold milk, a warmer is optional; if not, a reliable water-bath warmer is the most-recommended type.