My children are not vaccinated. I am not paranoid, nor am I careless about my children's health or the health of others whom we encounter in our lives. Before our first child was born, I did a lot of research about childbirth, breastfeeding, and other parenting issues. My research led me to choose midwife-assisted home birth, ecological breastfeeding with child-led weaning, and no vaccinations. I have a math degree. I am a sensible person who makes decisions based on facts, not on whatever the current fad might be. My interpretation of the facts, confirmed by my research, led me to the choices I made, with my husband's support.
An easy to read book called, "How to Raise a Healthy Child in Spite of Your Doctor" by Dr. Mendelssohn, is a good introduction to the topic of vaccinations. Dr. Mendelssohn relayed how his medical practice changed over the years due to what he learned from the parents & children he encountered in his practice. The reality he saw convinced him that what he had been taught in med school about this issue and many others was dead wrong, with terrible consequences for the health of our general population.
He also included in the book charts that showed that in ALL cases of the introduction of vaccines, contraction rates for the diseases in question were already rapidly declining before the vaccines became available. Hence, claiming that the vaccines nearly eradicated those diseases is not supported by the evidence.
Do what you want with your kids. Do your own research & make your own decisions. Just don't call other people crazy, irresponsible, or thoughtless when their personal choice is different from yours. Personally, I think the dangers presented to health in our society from vaccines gives me at least as much a right to be concerned about your decision to vaccinate, but I just do what I can to share my own concerns when the topic arises, and hope that all will come out right in the end, eventually. Here's a good analysis of some of the myths about vaccinations. Read it if you care to challenge your own assumptions about vaccines. http://www.relfe.com/vaccine.html
The best defense against any illness is a strong immune system. Keep your children's immune systems strong, and there is very little that can ever knock them down. Start with good nutrition for yourself before you even get pregnant & of course during & after pregnancy, breastfeed for at least a year (if you want the best benefits for your child's immune system), avoid introducing foreign chemicals into your kids' bodies through food additives & unnecessary medications (don't avoid the necessary ones, but they are few & far between), and you'll help your kids to be as healthy as they can possibly be.
My kids are ages 17-25 now. Only one of them has ever had an antibiotic. That was when she had pneumonia at age 14. The others have never had any kind of medication, except for a prescribed eye cream my son used once--without any noticeable effect for better or worse. He did have one drop of a prescribed eyedrop, but it nearly sent him to the emergency room with a scary breathing reaction. Other than that, we live a healthy lifestyle & use a wonderful nutritional supplement.
We never did "sickness" parties to purposely expose our kids to childhood illnesses, but I certainly understand why others would do so. They prefer to have their kids go through those illnesses at an age when experience shows they have the best chance to have a mild case with a strong immune system response that will protect them for the rest of their lives instead of possibly contracting the disease as an adult when the severity of the disease is likely to be much greater.
It all makes sense when you know the facts.