I am very much pro-vaccination for every child who is able to get them.
I want to respond to the pp who mentioned a study that concluded that non-vaccinated children appeared healthier than vaccinated children. The county in the USA with the lowest number of vaccinated children is Marin County, California, just across the Golden Gate Bridge from San Francisco. Marin County is also one of the most affluent counties in America.
The non-vaccinating parents in Marin are taking advantage of their wealth and privilege. They live in an area with high access to fresh fruit and veg year round, an excellent Mediterranean climate, surrounded by sea and mountains, unparalleled access to outdoor pursuits. Basically you will not find healthier-eating, more physically active, more chilled out people anywhere in the country.
If you had the same levels of non-vaccinated kids in a less privileged area, or highly urbanized area, I doubt that study would hold. A vaccinated vs. unvaccinated study of children that took into account economic status, education level of parents, access to healthy food, and level of physical activity, would paint a much different picture.
Choosing not to vaccinate your children (as opposed to not being able to for legitimate medical reasons) is an exercise in privilege. I believe we are privileged to be living in a place where vaccines are available and affordable, and feel we cannot afford not to vaccinate.