Having parents that lived in an age when childhood diseases where not simple things you just stayed home from school for, they killed and maimed children, I support mandatory vacinations. I have turned family members away that didn't vacinate before my son could get his shots because I know from the horror stories my parents have told me about friends who got polo, or messeles.
The main reason people don't vacinate? They are not exposed to these horrors today. In their world these diseases are minor inconviences, not deadly horrors. They don't know, don't understand, or don't want to know what they are exposing themselves and their children too. It says something to the success of vacinations that people are more worried about the mijor reactions to the vacinations then the disease itself.
My boy is going to get his shots to have the best chance of getting to adulthood, and his friends as well. If you think your child should not be vacinated, go educate yourself on the horrors you will bring forth.
Heck, right now in Washington State we are on alert because someone has messules and is bring it through the state. I am glad my kid has had his shots now.