Fine let's defer to you that he is not mentally ill because you can read the DSMV better than I can. 
I will defer to some who are more competent than I as to why Hillary is a better choice - first all of the living Presidents, second spook Morrell  who laid out "two strongly held beliefs" that led him to the conclusion that Clinton should be president. The first of those, Morell explained, is that Clinton is "highly qualified" for the job and "will deliver on the most important duty of a president — keeping our nation safe."
"Second, Donald J. Trump is not only unqualified for the job, but he may well pose a threat to our national security," .  He worked with Clinton in her capacity of secretary of state and praised her.  Or   Lavin political director under Reagan the senile and ambassador under Shrub the lesser who says that Trump is too erratic and that for the first time in his life he will be voting democrat because she "has what it takes to keep our country safe here and abroad.