Lawrence S. Jacobs has a valuable column in the Washington Blade, “Seven Myths of Estate Planning”
In the July 22, 2016 issue, page 9, he offers an “advertorial”, on “Myth #4L Are you obligated to leave money to your relatives? No way”. If you don’t have kids and don’t have a legal spouse, that is. But you need to say so in a will; otherwise the law says the relatives (however lacking in merit or character) can get in line when you’re in your Afterlife – and the indications (if you believe the Monroe Institute) are that you are likely to know it, and not be able to do a damn thing about it, even as a ghost. You have to be reincarnated (born) again to get another chance.