While these types of bowls aren’t actual necessities, they can make life much easier for your cat and for you. Elderly cats and others with joint issues such as arthritis, will appreciate these bowls because they don’t have to crouch down to eat or drink.
Cats that tend to cough or vomit after eating may benefit from these bowls because their neck and spine remain in alignment while eating or drinking. For some cats, this minimizes or even eliminates post-meal/drinking vomiting. So they’ll feel better and you won’t have to clean up after them when they’re done eating.