Andrewas:

When the Death Star blew up it left the Rebels alive and victorious for a single day. The entire Empire was still left to be defeated (which occurs in V and VI). When the Fellowship broke up, Rohan held off Saruman and Gondor was still fighting.

In Erfworld terms, the best comparison would be to imagine if Luke was blasted to bits just before he got off his shot. The Death Star is still intact, there is no hope of destroying it. Or imagine if Rohan had fell and the defenders of Helm's Deep were slaughtered. Sure, the Fellowship is still mostly intact, the quest to destroy the ring continues, but they've been dealt a mortal blow.

That's pretty much where we're at with Erfworld it seems.

But I also know, that sometimes people start something fully expecting to continue it to completion. But life sometimes gets in the way and slows us down. Perhaps they've simply found that their lives are too busy to accommodate Erfworld.