One takeaway from Palin's speech today is how tired she's become of the frivolous ethics complaints launched against her since she returned to Alaska in November 2008. Even Palin critics will admit that these complaints don't hold water and distract from state business. The complaints also bring with them a heavy financial burden that Palin has struggled with.

From Palin's point of view, then, leaving the governor's office would free her from these burdens. No one can file a state ethics complaint against a private citizen. Departing now also allows Palin to travel the country freely, building networks of financial and popular support. She doesn't have to worry that visits to the Lower 48 may weaken her political standing back home. And retiring from the office in late July gives Palin more time to spend with her large family, too.

Palin's statement made clear that, while she'll be leaving the governor's office, she is not leaving the national stage. Her book is scheduled for release sometime next year. She pledged to support candidates in the upcoming elections without regard to partisan affiliation. She took aim at the Obama administration's budget-busting spending policies. Palin's enemies have already taken today's news to suggest that her political career is over. It isn't. But Palin may also be thinking that her retirement from office will cause her critics to stop attacking her. She would be wrong to think so. Neither Palin nor the Palin-haters are going away.