8 Ways It's Always Sunny In Philadelphia Could End
1. The Gang DIES
Death comes for everyone, and when you play with matches this often, you're eventually going to start a fire.
As sad as this would be, since fans have come to love Charlie, Dee, Dennis, Frank and Mac like family, it wouldn't be too surprising if they ended up biting the bullet. The gang are constantly putting themselves in harms way unnecessarily, and thus, their grizzly end will surely catch up to them at some point.
There are plenty of roads to walk down regarding how they could die, as they've made plenty of enemies. Perhaps the McPoyles will return with a vengeance, or the "Random Guy" could get back at them for blowing up his car. No matter what happens, it would have to be epic, such as a fire at Paddy's or a giant explosion.
This kind of ending would be dark and horrible, but that kind of mean-spirited humour is exactly what the fans love about Always Sunny. "The Gang Goes To Hell" even stated to play with the idea of them dying, and it had fans on the edge of their seat, so the writers already know it can work.