Why do some people on here hate on Eminem?

I continuously see people on here discredit Em and make him seem like he sucks now. That he should retire, blah blah blah. Why? because he hasn't made a classic album since the Eminem Show? if that. Not many rapper or many singers for that matter have been able to make classic album after classic album. Remember Mariah Carey huge music comeback with The Emancipation Of Mimi? Before that she had album and a movie flop and many people thought her career was over?