This is called pruning! It is a normal Occurrence and every human being experiences it! It’s just where ur fingers have been in water for an extended period of time the blood vessels constrict beneath your skin causing this :)
Well, without medical care humans would literally die of so many infections and diseases, we would already be on the brink of extinction. Think of the Ebola outbreak, the black flu, Hiv's. Without the help of medical care, we would not be able to sufficiently prevent sickness.<span />