I'm happy to see my posts are bringing new people to the forums!
1) Vauthry's mother wasn't the one who was asked, and unborn Vauthry wasn't asked at all. You could argue they talked her into it later, but she was fearful, and Vauthry was still given no choice, so there's that. Emet-Selch still did it, he was the one with the Lightwarden and the power to do so. I'm not sure how this argument is supposed to absolve him of that.
2) Vauthry was corrupted with a Lightwarden, like Titania. Titania was not mindless, but was still warped into a murderous parody of what they were before the Lightwarden overtook them. Vauthry was clearly corrupted physically by the Lightwarden--Humes aren't fifteen to twenty feet tall, they can't do an Exorcist with their necks or eat silverware--and they don't come with a second face embedded in their chest. He also certainly seemed to be affected mentally as Titania was. Apparently their speech patterns in Japan are similar, something that implies the speaker is "off"?
And then there was Yoshi-P's interview where he said he would like us to consider, "was Vauthry just a friend of the sin eaters, or was he being controlled by someone". Considering Emet-Selch did not give him a choice to be a pawn, and Cylva also said raising the Cardinal Virtues had to be the idea of the Ascians, my bet is on "controlled by someone".
On the Cardinal Virtues, they were mindlessly acting out what they did in life, and were apparently a danger to the living. That doesn't sound like they were helping anyone.
3) More cutscenes to rewatch, thanks for pointing that out. That really doesn't change that the writers still pushed it was not the path to take, though. The game has been fairly consistent in the message of coldblooded murder being not nice.
4) Emet-Selch felt hope, for what? It says he didn't know, and I don't see the word love mentioned anywhere. Hope that the baby would live up to his test? That the baby would succeed in the plan he had for it? Did the baby's mother know who her partner really was, and what he really intended? Did they know that ultimately they were "insects", not worth what he lost? Did any of them, in all those thousands of lifetimes of his? Varis certainly seemed keenly aware he was a disappointment.
5) The Source in the Black Rose timeline was dying. Not as in "these people are going to die of old age anyway", as in, the planet itself was failing to sustain the survivors.
And after the night comes the morning, as the sun rises to greet the new day. While it may already be too late to mend this dying world, there are those who would strive to create a place where the sun will shine again, not for their own sake, but for those in a past that may yet be saved.
An impossible situation, because of Black Rose, which was because of Garleans, which was because of Ascians. There would have been no need for this heavy decision but for the Ascians. And it was heavy--this was no dismissal of the survivors as "insects". Nor did their plan involve the destruction of many other healthy worlds and the billions of people living on them, or any of the other games the Ascians play. Not even UNLEASH ULTIMAAAAA.
I've got no problems calling Emet-Selch's motivation sympathetic. I will definitely argue against calling the atrocities the Ascians have committed "a matter of perspective". "Even if they have a reason and a goal, an incredible amount of people died in the process". (Look out, Yoshi-P is attacking the writers!)
Thank you also for the concern, but I still don't need it. Welcome to the forums!