The perfect barefoot shoe should let your feet move naturally. If it's flexible and can be easily twisted, bent, and rolled up, it'll let your feet move like they would if you were barefoot, which helps keep your body mechanics natural and helps your feet get stronger and healthier.
Zero-drop shoes allow for natural foot movement. It aligns the heel and toes, allowing for natural foot movement as if you were barefoot.
Raised heel affects your center of gravity and posture, leading to unneccessary strain on joints and muscles.
While conventional shoes have narrower fronts that sometimes squash our toes together into an unnatural shape, barefoot shoes feature wide front spaces enough for your toes to move naturally.
Thus, they preserve your foot's anatomy and allow your feet to stay in good shape. Thus, they preserve your foot's anatomy and allow your feet to stay in good shape.