To a degree, it is useful to value truth over happiness in each of the occupations you mention. But humans have the ability to restrict their critical analysis to certain domains. Allow me to rewrite my comment:

>As a firm atheist, I am fully open to the possibility that much of the world should stay religious, unless they're doing some sort of important work that's tangentially related to the question of God's existence (like studying humanity's origins), or they are doing some sort of work that requires them to make sure they don't compartmentalize their critical analysis.