Was JFK a bad, mediocre, good or great president?

Question

And explain, in your opinion, why?

I already have my opinion, which is informed with some research I've been doing lately, but I'd like to know what others think about JFK's presidency and why.

Special props to those that give some support to what they think. Thanks.

Answer 1

 He may have been an ok president, but his morals and personal life were way out of line. He had numerous affairs, which also included an illegitimate son.