JFK was a dopehead and a coward.
I love it when people like you get all riled up, insulting dead Presidents and such, it's quite patriotic and educated of you, really.
Aside from averting nuclear armageddon (which America incited) he also set the goal for the moon landing and asked Congress for $7 billion to $9 billion to fund the space program, not to mention the establishment of the Peace Corps.
All in all he was a good President, not a great President, but not a bad one either.