I disagree with most of your thinking that Palin would not be a problem. I scares me that getting the job as president does not include the simple vetting that a police officer, FBI agent or even a worker in a high level financial job would receive. If your elected president do you need to summit to drug testing, psych evaluations, lie detector tests, background test, neighbor and friend questionings; too my knowledge this level of basic testing testing dose not happen if your elected president.
Without such testing how can we be assured that said person will not snap and push the button because the stress off office got to be too much? Palin in her only other political job (under 2 years)simply quit when the stress of all that litigation concerning her misuse of office got to be too much, so who is to say that the dingbat wont push the button?
People don’t pick a president, gawd does.
http://www.nytimes.com/2008/10/11/us/politics/11trooper.html