Reason #10:  Kerry is hard-working, Bush is lazy.
Reason #9:  Bush is careless with his words.
Reason #8:  Bush is dangerously secretive.
Reason #7:  Bush refuses to listen to contrary opinions and is incapable of changing his mind 
                           when the facts require it.

And so we come to...

#6:  Bush is cruel.

Cruelty to animals as a child is a danger sign, psychologically speaking.  As a young child, Bush shot frogs with BB guns and blew them up with firecrackers.

As a college student, Bush branded his fellow fraternity members on the buttocks.  (He also joined the secret society "Skull and Bones," which harkens us back to Reason #8.)

When Governor of Texas, Bush mocked the plight of a woman on death row he gave the go-ahead to execute:  "Please," he whimpered, "don't kill me."

Before his televised speech informing the American public that he has invaded Iraq, he pumped his fist in the air and shouted, "Feels good!"

And this cruelty has now extended to his Presidency.  Torture has occurred throughout the prisons and prison camps of Iraq and Afghanistan, most famously at Abu Ghraib.  We now also know that the prisoners at Guantanamo were also tortured.

He has advocated the extension of the death penalty, even though it has become apparent that it is not exercised evenhandedly.

He pressured the EPA to play down the health damage of the air around Ground Zero, putting rescue workers, volunteers, and many other good people in grave jeopardy.  Many firemen, policemen, and others who worked in the rubble have had serious lung problems.

He cut the pay of the troops in Iraq!

He ignores the pleas of even people in his own party, like Nancy Reagan, plus other figures like Christopher Reeve and Michael J. Fox, who are desperate to get research going on all kinds of stem cells, including embryonic, which are taken from frozen fertility clinic embryos which would be discarded and will never see a womb.  Bush instead sticks by his fundamentalist dogma, ignoring the help that hundreds of thousands of very ill people could get from this line of research.  Many people will die, and others will live in great pain and suffering, due to Bush's decision on stem cells.

When a man is cruel, it prevents him from helping others except in the very narrow sense of aiding one's cronies or advancing one's agenda.  It is fine trait for a despot; a terrible one for a powerful democracy.

So here we are at:

#6:  Bush is cruel.