Just because your kids are healthy now doesn’t mean anything. All it means is that they most likely never had contact with a serious disease. What happens if while walking down the street someone with a disease coughs and while grabbing for a tissue, touches your kids coat. Your kid tugs on his coat to keep warm and then promptly picks his nose, as kids do.
Your kid’s body now has that little disease crawling through it.
If he’s vaccinated, the body will know how to respond and will promptly sound the alarm.
If he’s not vaccinated, the body will not know what to do and will be overwhelmed by the growing force of the disease. Depending on the disease, the growing force may be fatal.
Now, if your kid goes get a vaccine, he may get a headache, he may get flulike symptons, he may get a rash, might even get bruising, and yes, .000002% chance get real sick.
Bottom line is that to not vaccinate is idiotic and more importantly it is dangerous for others. You want to be all foo-foo, eat your vegan foods while wearing Birkenstocks, go right ahead. But once your actions have reactions with others, that’s where it has to stop.