Here's a chart of HEROES viewership by episode:I'm sure over time I could come up with a list ---
Heroes -- when NBC started moving it around -- had 11 million viewers -- one of their highest rated shows -- after they fooled around with it (and the unlikely timing of the writer's strike) still had 8-9 million.

HEROES peaked around 16 million and was down to just 4 million when they canceled it. In other words, it was drawing only a quarter of the viewers it once did. If you owned Best Buy, and this chart reflected the sales performance of one of your stores, wouldn't you too consider closing it?
Also, as an aside, you should know that a number of your fellow christians were less than impressed with the message of the show:
http://sntjohnny.com/front/nbcs-heroes-and-a-christian-response-a-warm-up/114.htmlIn this series, we are given to believe that evolutionary processes have allowed a class of people to emerge with special gifts like mind reading, flying, instantaneous regrowth, memory stealing, time travel, etc. But at no point does the series try to explain how exactly a genetic mutation can allow a human to fly. It isn’t like they sprout wings. They just go, like Superman. We have here the curious mental exercise of imagining that evolution can produce literally any phenomena we might imagine- including what would otherwise have been described as supernatural- while not bothering to explain what the actual mechanism is in terms of the laws of physics.
It is almost as if we are being prepped to be direct witnesses to a miracle and yet still prefer a naturalistic explanation (2 Thessalonians 2:9-12).
In the meantime, the characters themselves are mystified about their powers and we occasionally see arguments about the source of the ‘gifts.’ Is it God? In the latest episode, Maya terms Sylar/Gabriel (I’m sure ‘Gabriel’ is unintentional) as a gift from God when of course we know that Sylar is a major punk. We are led to believe, I guess, that God is perfectly happy with a woman being able to kill people at a distance when yucky stuff comes out of her eyes. And in an episode previously, the argument is that there can’t be a God if all these bad things are happening. Ok, but is there no counter-argument?