Given a game like Prince of Persia where you cannot die has its benefits and disadvantages. The key benefit is that you're not entirely discouraged when you perform a misstep, and can immediately try again from where you left off. One of the major disadvantages is that gameplay is shortened since there is no fear for failure.
Despite that, the pure benefit, at least to me, of not dying is to be able to play the game as how the original plot designer intended - with no breaks to the story due to "lives" or "continues." For me, this is about as true to an interactive movie as a game can get, all while still giving the player full interactivity of the game.
This game is definitely one of those where I wouldn't mind playing again, simply because of the game's flow and beautiful 1080p graphics. And with another Epilogue expansion coming very soon with at least 3 more hours of playable content, I'm good as ready to jump right back into the desert.