Tennis isn´t all drama, it isn´t a physical struggle to see who lasts the most playing the game. It´s a technical sport, period.
The joy i get from tennis is from the speed and beauty of the shots and from the technical brilliance displayed by the players. That´s it.
The thing is that nowadays they´ve been selling this spartan thing, where the most fittest player prevails, taking advantage of the slower courts and highly defensive play.
It´s no surprise Djokovic and Nadal have been dominating most of the tour. It´s all build to fit their styles. And i´m not offended when people say they enjoy their clashes, but to say it´s the best tennis we have ever seen is stupid.
PS: 2008 Wimbledon final is way overrated.
You make it sound like it's all about endurance, well, it isn't... If it was, then the favored playing style would be pushing the ball until someone falls over due to exhaustion. I definitely wouldn't describe Djokovic as a pusher and Nadal also displayed some brilliant shotmaking in this match, that is when Djokovic's deep returns/groundstrokes allowed him to. Djokovic and Nadal were hitting better winners deep into the 5th set and 6th hour than many others managed to display in their respective first few sets/hours of play. Players don't become pushers just because the other guy has an uncanny ability to retrieve balls that would be winners against 99% of players on tour.
As for endurance, endurance only truly comes into play when you meet someone who's actually your equal in terms of tennis skills. It's not like they are slugging it out past the 5 hour mark from round one. But, are you saying that endurance shouldn't be one of those factors (along with mental fortitude, etc) that separates two equally matched players? Isn't that also a part of the sports experience? This is tennis after all, not golf, you're supposed to do some running
You say that you appreciate the "beauty of shots and technical brilliance" in tennis, but isn't footwork and court positioning equally important in shotmaking technique? Even when someone like Federer neglects his footwork, his shotmaking and accuracy takes a visible hit. If footwork, running and stretching wasn't important to most tennis fans, then wheelchair tennis would be aired on primetime TV. There is more to tennis than just the finishing touch of the wrist, even Federer with all his touch and finesse knows better than to ignore that.
Regarding the historic development of the sport, from 1993-2003 (with the sole exception of Agassi in '99) you had year-ending #1's that were either ace serving machines (Sampras, Roddick), clay court specialists (Kuerten) or archetypal pushers (Hewitt). If anything has ever been a threat to the sport of tennis, it's IMHO not "monster fitness" but "monster serving". I definitely wouldn't want to see the likes of Isner and Raonic dominate the tour over someone like Djokovic.