Aira's research on the Saviors included their past activities and records of their lives on Earth. Similar to how she mapped my food tastes from my orders in the past, she profiled each member of the Saviors from their records.
To put it bluntly, most of them were trash. Convicts in and out of prison, multiple counts of assault and battery, rape, murder, theft, you name it. It was as if Savior was deliberately trying to get the worst bastards humanity had to offer.
'People who just go along with their desires like this, what kind of regrets would they have at all?'
Every single one of them led a disgusting life as a human being, you would think they would be better off with Reaper money, right? No, the money didn't help at all. It only made the problem worse.