Impossible for a Western society to do.
Westerners need to believe there is at least a possibility of survival. We'd be delighted to send 100 people knowing that some wouldn't probably would return. It wouldn't just be the religious folks who'd protest, though they might be the loudest.
We'd want to believe that each and every one had a chance. And when 10 came back we'd say that was unfortunate but they all knew they were taking a chance.
But we'd never send them knowing that 90 wouldn't make it.
Arf