As much as I can't stand Britney, I feel kinda bad for her. Once your a pop star and you've made it as big as she did, you've pretty much sold your soul. You HAVE TO live through this squeaky clean image because your fan base is filled with preteens, you hardly have any say on anything because your agent and record label needs to you play a certain nice gal role to uphold that image. And once you break out of that image and go against everything your SUPPOSE TO BE and start doing what you want, you catch hell and if you can't handle it, well...this is what happens. Sounds petty for someone that makes millions on top of millions, but she can't live without somebody watching and analyzing. I do not envy the life of a pop stars.
As for Anna Nicole, she's just lived recklessly.