Parents may be free to become martyrs themselves. But it does not follow they are free, in identical circumstances, to make martyrs of their children before they have reached the age of full and legal discretion when they can make that choice for themselves.
From a decision by the Supreme Court on Price v Massachusetts, via a post on Daylight Atheism about certain religious sects which advocate against receiving medical help when ill. The post is a good read, but I specifically love the passage.