In general, I think people should get vaccinated. Having said that, you can't just dismiss those other things (freedom, choice, faith) because it is about those things too. I support vaccination. I don't support the government forcing you to inject yourself with anything but not getting an MMR vaccine (for example) unless you have a very good concrete reason seems pretty stupid.

Many states have allowed religious and/or personal exemptions (in addition to medical exemptions) over the years. I don't see removing requirements as having a huge effect. Most parents will continue to vaccinate assuming doctors continue to recommend it.