Alongside the stupid "vaccines cause autism" bollocks, some people use a slightly different anti-vaccination argument. It goes something like: "What do we need (eg.) diphtheria vaccinations for? There have been only a half dozen cases in the last decade in the US. They are only using scare tactics for monetary profit."
What they do not understand is that the diphtheria cases are so amazingly low because of the vaccinations. Before the vaccinations there were 100-200 thousand cases annually in the US alone. After the vaccinations the number of cases plummeted dramatically. (1)
Stopping the vaccinations would be a really, really bad idea. When the Soviet Union collapsed, diphtheria vaccinations went with it, and the number of cases sky-rocketed as a result. (2)
It's like two guys sitting on a tree branch and one of them saying "what do we need this branch for anyways? Let's saw it off."
(1) http://www.cdc.gov/vaccines/pubs/pinkbo ... ds/dip.pdf
(2) http://wwwnc.cdc.gov/eid/article/4/4/98 ... rticle.htm