Why do we get vaccinated?

Answer 1

1. to avoid getting the disease ourselves
2. to minimize the severity and duration if we do get the disease
3. to create "herd immunity" in the population, slowing the spread of the disease and reducing the chance of epidemics
4. for a very few very serious diseases highly specific to humans total eradication of the disease in the wild (e.g. this was successfully done for smallpox, was nearly done for polio and could be done in the future, and perhaps another half dozen similar diseases at some point in the distant future)