*Spoilers* Anyone feel joining Emet would have been better

[Absimiliard]

And they immediately went back on that sacrifice by offering innocent life and prayed to a god they created to make the world a “paradise.”

There is zero evidence that the new life created by Zodiark was sapient. This being the case, there is nothing demonstrably wrong with sacrificing it to bring back the many friends and loved ones that gave up their lives to save the world. With the original sacrifices restored and the world healed, why would paradise have been a bad thing? Zodiark was more than powerful enough to forestall the end indefinitely, and the world during that age had more than enough aether to sustain him without any harm being done.

Venat, on the other hand, consigned her own people to what is essentially oblivion because of her own lack of hope. They never had a choice. Their flame was snuffed out needlessly, as it is very likely they would've found a solution to the Meteion problem in time.