What the meaning of "When I'm Gone" means (duh..)

[ShadyRox]

And by the way, digging deeper into the song makes me fell closer to Em, for some reason, but for evryone that agreed with me, thanks, I feel special..... lol But yeah, I agree with ALL of u...And still, lets hope he DOESNT retire...

[MoE]

yo man i htink all that em did was jus kill off slim shady he kinda hung up his mic buit just for now.... he will never retire from rap jay z did an im still herin tha dude on mixtapes an kanye's cd's dre will do the same thing dre's gunna still prob produce when he retires jus not as much... proof even stated em will never retire from rap he will reap till he dies like every true artist

[Shady Spain]

When I'm gone is a great song and the others are gonna be great too.
I hope he still on rap,he's da best