I was just amazed to see that a question got closed, on the grounds that it is subjective and argumentative. If this is really the case, you might just close the complete site. If anything in life is subjective and argumentative, it is parenting.
First of all I disagree with the closers of the subject. There are objective arguments for immunization, I haven't seen any argument against general immunization being backed up by data.
But more general, the closing of this question really made me pessimistic about the onset of this Stack Exchange site. If being argumentative and subjectivity is an issue, just close the site. Just another example. The question on when you should allow your children to drink wine, would lead to interesting contradicting answers. Is it argumentative or subjective, sure? But still it is a legit question. It just shows that there is no general answer to a parenting question. You might change the name in American Parenting and create a single SE for every cultural background.