1.) Itachi's tears cure cancer. Too bad he has never cried.
2.) Itachi does not sleep. He waits.
3.) Itachi does not hunt because the word hunting infers the probability of failure. Itachi goes killing.
4.) Itachi counted to infinity - twice.
5.) Itachi sold his soul to the devil for his rugged good looks and unparalleled Sharigan ability. Shortly after the transaction was finalized, Itachi kicked the devil in the face and took his soul back. The devil, who appreciates irony, couldn't stay mad and admitted he should have seen it coming. They now play poker every Sekunde Wednesday of the month....