I know ... there are so many levels to this debate that it will keep me busy on Steemit posting articles for a long time.
I personally had mumps, measles, rubella and chickenpox as a child, along with my siblings. It was NOT a big deal back then and nobody seemed scared. We did not go to the doctor but just stayed home and recuperated and enjoyed getting a week off of school.
Those normal childhood illnesses were not dangerous in developed countries, and not overly dangerous in undeveloped countries. I know Canada admitted that those vaccines originally were to save money for society by having kids miss less school and parents miss less work, thus a benefit to society. However, it hasn't worked out that way as children are now ill more often, and too often one parent has to quit the workplace to stay home and care for an injured child.

You are not crazy! In fact, there are many health benefits to being exposed to the aforementioned normal childhood illnesses. Children often have a growth spurt afterwards and an improvement in health. For instance, allergies often disappear after measles. And studies have shown that you are at less risk for types of cancer if you have had them. I actually feel badly for my children that they may miss out on these immune system building parts of being a child. I want them to be healthy for life, not think short-sighted and just miss a week of rash & fever as a child.