Medicine is always a weighing of risks. In the case of vaccines, the benefits greatly outweigh the risks. Vaccines are a civilizational necessity. Only in this generation which hasn't known the "family destroyer" whooping cough, polio or smallpox, is this even something people have the luxury to gripe about.
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition