Vaccines are necessary because they do not only prevent death, they also prevent illnesses. An argument that could be said against vaccines could be that you do not need them because illnesses and diseases go away with sanitation ("Vaccines.gov"). If this was true then all diseases would decrease at the same time, but diseases have not gone away like that. Another example is “Every year thousands of adults in the U.S. still suffer serious illness, are hospitalized, and even die due to disease for which vaccines are available” ("Vaccines and Immunizations"). If vaccines were used then illnesses, that have vaccines, would not be as common as they are. The next reason that vaccines should be used is that they help your immune system to prevent
