Why do infants and toddlers need diapers?

Infants have no concept of the toilet nor any concept of or control over their need to go toilet and toddlers little to no concept or control over their toiletry needs. Because of this they need to literally wear their toilet which is what diapers are. This is not only for the sake of their own hygiene and health since infants and toddlers get sick much more easily than everyone else but for the sake of the hygiene and health of everyone around them as well so nobody else gets sick either. They go toilet in their diapers all the time and their diapers will trap and contain all the nastiness. They do this instead of using a potty or toilet until they can learn to manage their toileting needs and learn to use a potty or actual toilet.

Second, due to their cushy design, infants and toddlers also need diapers because they give them some protection from injury. If a toddler falls from a swing for example right onto their bottom, they won't get as hurt as an older toilet trained child because their diapers absorb some of the impact.

Third, infants and toddlers need diapers because baby powder exists and infants and toddlers need for diapers justifies and reinforces its existence as baby powder is designed to be put in infants and toddlers diapers where it will be trapped to prevent irritation and rashes.

Finally, infants and toddlers need diapers because prank itching powder exists and infants and toddlers need for diapers justifies and reinforces its existence as itching powder is best used being put in infants and toddlers diapers where it will be trapped and cause infants and toddlers constant itching and discomfort until their next diaper change.