Our society is built on the backs of the less fortunate. We live in a country we've taken from weaker humans, we feed animals in factories until we're ready to kill them because it's cheaper than treating them humanely. We get our energy from coal mines where hundreds of thousands of workers have died and we stand by as genocides and famines wipe out entire regions. We buy products made by children who work all day every day in factories.

Given the circumstances, cruel experiments on animals (or even humans) to speed up scientific progress (and therefore welfare) looks like a really good deal to me.

Victims of science are just another statistic.