Chairman Mao wrote:

The advantages are tremendous. Question is, does it have a chance of becoming the prevailing theory? There is a new theory on the end of the universe put forward almost monthly. One day the big crunch camp announces its victory, and then gets swatted next week by the fizzle theorists. They did find honest-to-god Quark stars recently so the existence of dark energy has become quite a bit more certain than it was just a few months ago. Personally I think the big rip is the way its going out because there will likely come a point in the future (as there has in the past) where the repulsion will become so powerful that existence will tear itself a new asshole called the big bang.

Personally I'm a big fan of dark energy because of not only the wormholes-for-travel thing but also the escape that is provides: it also makes time travel possible. Want to escape the end? go back to the beginning. It doesn't even matter if its a parallel universe, you still don't get ripped up. What I don't like is the end coming like that, given that its alot closer than the cold oblivion of the big fizzle. Yes, its 22 billion years from now and the chances of humanity making that far are pretty goddamn slim. Nonetheless I would like to go on believeing that its possible.