Bad news for another celeb

Lindsay Lohan arrested last night--DUI, cocaine possession, etc.
And once again, everyone will be fascinated by the ET/Insider/Access Hollywood reports, and Lohan will eventually do rehab, and maybe a little jail time, and apologize, etc etc. But what if anything will anybody learn from all this? Will it just be another chance to do the equivalent of staring wide-eyed at the accident as you drive by?