There's really no explanation needed Cena's did everything their is to do I mean what's left besides The Undertaker's Streak but their's only a 50/50 chance that's what he will be doing at 'Mania I mean he's been the Face Of The Company for 8 years,Been in wrestling for 13 years(12 with the 'F/E including development) Beaten Rock,HHH,HBK,Kane,Taker,Lesnar,Orton,Batista,etc. I mean what's next I can't possibly think of another feud for Cena Or should he go Part-Time because of his Injury's (almost every 5 months) what do you think....