Ethics of Suicide (tangent from "van lifer goes missing" thread)

But that doesn’t make sense. How can someone who has no obligation (not just no legal obligation, but no moral/ethical obligation either) not to do X be considered selfish for doing X? If you think, for example, that it’s selfish not to help one’s child pay for college, or not to help one’s elderly parents with their financial struggles, doesn’t that mean you think that such help is a social obligation, even if it’s not a legal one? And in cases where we can agree no such obligation exists–say, a wealthy 50-year-old twice-divorced career woman wants her elderly mother who lives on social security checks to pay for said 50-year-old daughter’s third lavish wedding-- you wouldn’t call the mother selfish for refusing, no matter how much the daughter’s feelings were hurt. Right?

This seems to hit the nail on the head. Thank you.