I don't like reading gentle and pleasant books. If I wanted to be purely entertained and accidentally stumble upon a deep emotional journey, I'd watch a movie or a TV show.
I'm reading something "light" now (or "lightish") and it's Alain de Botton's Essays in Love and I don't know, he's supposed to be a philosophical writer and the reviews of the book claim that his sentences are poetic, but I'm not impressed so far.
I think sophisticated writing is one of the most important criteria for a book to be a work of literature, especially modern literature. Did you mean the Peter Rabbit books? I don't really know much about them apart from the ubiquitous merchandise that they spawned but I'd say no.
The fact that you prefer heavier, more philosophical/intellectual books does not give you the right to redefine the word "literature".
There's nothing more boring than elitism.
"Certainly the most talented individual, the most well-rounded
... to play this game." - Jason Goodall
We should be appreciative of Federer though, because we will never see anything like him again. The fact he can still compete for slams ever after the erosion of his physical skills is really a greater testament to the natural talent he has than the period of time when he was dominating the tour.