On a serious note: When my kids started playing with their new Playmobil, I got to read half of the article in the NY Times about more parents not immunizing their kids. One mom is quoted as saying "I'm not going to sacrifice my child for the greater good." She acknowledges that her decision puts other children at risk.
She doesn't acknowledge that the risk her child creates by not being immunized is a greater risk with much more data behind it than the perceived risks she's avoiding for her children.
She doesn't acknowledge that her child's continued good health depends on other parents being willing to vaccinate their kids (for the good of their communities and themselves). Not immunizing is the privilege of the wealthy and the burden of the poor.
Any health decision we make -- in pregnancy, as parents, for ourselves -- involves risks and benefits, unforeseen consequences and unknowable protections. I'm not someone who blindly follows the advice of medical professionals. But when it comes to vaccinations I don't think the shaky science against it, the rumor and innuendo and the playground conversations about breast-milk providing enough protection against the diseases against which children are inoculated, should win out over 50 years of proven public health success and the hundreds of thousands of lives vaccinations have no doubt saved. Immunizing isn't just about the greater good, it's the better decision.