Bono is so cool because he is completely honest with himself and always open to the world around him.
Bono has always chosen to reveal and nor to conceal himself thus choosing to face his "failings" in life with the resolve to change for the better - which he has done.
Bono is a man at peace with himself and thus, he has been able to be open with others. He doesn't judge, just accepts others as they are. He chooses to forgive when he could condemn.
And that makes him cool.
Bono is so cool because God put inside him a Heart of Gold which shines brightly in the world and is ever expansive.
And to all of this, Bono's natural personality, inate charisma, wonderful lyrics and very good looks help to round out a man who is truly the epitome of cool (he prefers to think of himself as hot - I agree, Bono).
In sum, Bono is so cool because he does not think he is cool. He is so cool because he has chosen to remain so down to earth with himself and others.
Thank you for this thread.
And THANK YOU, BONO, FOR SHARING YOUR MAGNIFICENT LIFE WITH ALL OF US....