I have no obligation. My parents definately could not handle the real world, they have lived wrapped in cotton for all of these years letting someone else do all their thinking for them. To come out would shatter all of their illusions. No, they like their little world, right down to the crying and moaning about their poor lost children. I think it buys them sympathy from others in their congregation.
Actually I think one of the reasons they (and some others) don't want to talk to us isn't so much that they "can't" per the directive, but that they really don't want to hear anything that would break that trust they have, they just can't think about how terrible it would be to have been deluded and to have given everything for someone's sick dream and power trip. Yes, there are some who can come out at 70+ and be strong, but there are others, my parents included, who just can't live outside that system.
Others in my family are all wrapped up in their self-righteousness, boy do they love their positions in the congregations and their belief. They don't fear hearing something that will cause them to doubt because they won't hear anything like that. They just scoff at it and call it apostacy (aka fear mongering and paranoia and conspiracy theory). They let loose with some well placed scorn and live for the time when they can give that LOOK and turn away in all their glory of goodness and rightness.
But see, I know they don't have the truth, but I don't have their truth either. My path works for me and I am very happy in it and on it, but they would not be happy on my path because they are very different people. And their religion fits their needs in those ways I have described above.
So no, I don't have any "obligation." If one of them came to me with an open heart and an open mind and truly wanted to hear, that would be entirely different.
Sherry