It's a poor health choice if your child gets measles and dies, yes. Mine won't because they've been vaccinated as have they been for all other known diseases for which we have vaccines so we don't die from preventable diseases.
Vaccines work. It's a scientific fact. The only reason people that don't vaccinate can say it's not necessary is because of the millions of people around you that did get vaccinated and thus aren't spreading diseases around that you or your child could catch. At least not if you live in non third world countries. If you aren't vaccinated you couldn't even travel to a non- developed nation. It wouldn't be safe.
There's no scientific proof that vaccines do anything than protect. If you don't vaccinate, that's your choice but it's because of people like me that do that keeps you healthy.
I guess it is based on what you define a poor health choice as.