Eminem has no reason to retire...any record hes going to put out will be platinum no matter how good/bad it is. Can you actually retire when u can't even walk outside by yourself? People will be harassing him for many years so how can you retire when you're still in the public eye? Not putting out anymore albums isn't necessarily retirement.
And please don't bring up 2Pac and his lyrics, he is severly overrated in the first place.