Whether all these figures are anti-heroes, or in some cases something else entirely, is an interesting question. As is the question of why anti-heroes are so important in quality television. Short form answer is that they match the times. It's a mostly cynical and sour era, with little faith in institutions or, generally speaking, leaders.
Greater comfort, I think, is to be found in the realization that infinity is as problematic for science as it is for religion. Much as an infinitely perfect God leads to logical clashes with reality, an infinite multiverse bedevils attempts to apply tools such as probabilities to our understanding of the world.