I really think - when viewed from the widest perspective - Britney should kill herself now.
That her career is over is, I think, not seriously arguable.
And it's not like she could ever have formed a non-pathologically-narcissistic relationship with either of her children. And they'll have happier childhoods if they don't spend them waiting for Mommy to get back from rehab. And while we all shudder at the thought of a child being raised by "K-Fed", in all likelihood, the child will actually be raised by whatever tired-but-patient Guatemalan woman he hires as the maid. Not warm, but usually safe enough.
True, there are a lot of millions left that she could have devoted to shopping therapy. But for someone who has lived her entire life in pursuit of cheap fame, seeing her name age into the embarrassingness that we now attach to Tiffany would be in some ways a suffering worse than death.
And if she zeroes out now, she's guaranteed to shove Anna Nicole's moldering corpse out its current qualifying slot as "reality-TV Marilyn Monroe of the 00s". That kind of dashboard-saint immortality would really enshrine what she stood for.