Djokovic has a steady, grind-you-into-the-dust type of game. If you enjoy watching robots go about their business, then maybe Djoker is your man.
On the other hand, Federer plays with style and grace, mixed with beauty and guile. That's why he's so enjoyable to watch.
Two almost completely opposite styles. One puts you to sleep with its repetition and monotony. The other wakes you up and brings a smile to your face as you marvel in its mastery.
Lois: "Peter, I'm not wearing any panties."
Peter: "That's ok, honey. We can throw that chair out."