Seriously , what's wrong with britney spears?

I mean , she used to be awesome , a while a go , she was a killer dancer . But now she struts around,moving her hands , a couple of easy dance moves, lipsyncing .And don't tell me she has had two kids and she is almost 30 , i mean jennifer lopez is 40 and is at the top of her game and the same goes for janet jackson and of course madonna. Seriously , if she doesn't love preforming anymore why doesn't she quit ?