Vaccines are one of the most amazing inventions. The fact that they can eradicate entire categories of diseases and save so many people from suffering and death with such a simple intervention, is truly remarkable.
It makes me very sad that as a society we are failing to simply take what's there. Maybe the biggest flaw of vaccines is that they are so effective that people don't remember how bad these diseases really were, and only know the minor side effects.
Feeling bad for a couple of days instead of getting certain cancers, measles, hepatitis, and many other serious diseases is a great fucking deal. Also had almost no side effects from the hpv vaccine, 10/10 do recommend.