In the interests of full disclosure, I like Palin and support her. I wanted her to run for POTUS and am truly disappointed that she quit office in midstream. I would have some difficulty now supporting her in 2012.
That said, I do not think she pulled out for political reasons. I saw that a family vote was taken with 4 "yes" votes and one "hell yes" vote: her husband. So I think she exited for her family's sake. I have read that she did not run for office once before due to her son's objections.
No one's children should be subjected to the kind of nasty, viscious things that have been said about the Palin children. As demonized as Rush/Hannity etc are, if they said anything remotely simular about the Obama children, the lynch mob would be out in force. In fact, Hannity joke the othe rnight that he would name the Democrat politician that he though "looked like a slutty flight attendant" and the Democrat lady he was interviewing about died. The double standard is amazing.