1. Is Religion a useless skill in 4E Dark Sun?
I know the Divine Power classes are out (aside from house rules) and was thinking that Religion as a knowledge class is of limited or virtually no value.
I would like to be wrong, I would like to find a way to make it a sneaky useful skill, but I am baffled. Given the choice which character is going to focus on Religion over Endurance or Survival in a harsh world like Athas. Even those under the delusion that they are priests (e.g., certain city's templars, elemental priests, etc.) are more likely following Arcane skill related pursuits.
Of course maybe I am looking for a solution to a question that is already answered by the setting--in other words, stop trying to equalize skill choices and accept that some are useless in Dark Sun.
2. If not, how would you incorporate it into skill challenges?
If Religion as a skill has a place, this brings up a different challenge, namely skill challenges. As I work on a set of sample skill challenges I was looking for a diversity of options. One less choice isn't a big problem, but it would be nice to slip in a sly Religion test with a low DC.
For example, with ancient ruins and the like that may have had a religious purpose back in the [insert color] Age, History seems a more appropriate skill check. The options for Religion seem covered by other skills.