As far as vaccinations go, my experience is that the uneducated are more likely to get their kids vaccinated. Usually parents who forego vaccination have read books and materials about it, and discussed it with others, usually several times, before making up their mind not to immunize. Listening to a health department propaganda about immunizations, and doing what they say, does not make you 'educated' about immunizations, only a compliant patient.
And as to whether the un-immunized cause problems? It isn't a problem as long as those who desire to be immunized still can be. Immunizations are not always a cure-all, as exemplified by chickenpox and whooping cough outbreaks, even among the immunized.