Personally, I think working for the best requires some universally beneficial guiding principles, without which, we regress towards predominantly selfish behaviours.
PTB: right, the human species with it's mostly controlled, organized behaviour is perhaps already too successful of an evolutionary story. We are overrunning the good parts of the planet. The invention of an unseen, watchful deity, aka "religion" , was part of that internal control mechanism.
Not that a shaper or creator of the universe should not be thanked., recognized.