They also live in harsh conditions which tends to band people together if the area is not overpopulated.
Further,
Religion is not a requirement for a fulfilling life, it's more the work you perform day to day that does the trick.
Discussion
The people you spend your time/btc on are more influential on your sense of fulfillment than any work of the hand imo, but if your work involves serving and providing for those you love than a shit job probably means more
Time is the only currency, whatever you spend it on is what your religion is.