I'm not going to lie, not vaccinating my child was a scary choice. He's now miles ahead of all his friends (3 year olds, yeah I know not much) but he's more active, more verbal, better problem solver, more extroverted, and just seems overall healthier, he goes through colds in one day, as opposed to his friends that can take over a week. And this is by a lot. Just my 2 cents.
I don't think people deny the science behind vaccines, the question is at what cost?