We use the resources we have available. The sad thing about most of the experiments you list is that we gained a lot of useful knowledge from them. Sure it's

We use the resources we have available. The sad thing about most of the experiments you list is that we gained a lot of useful knowledge from them. Sure it's easy to now look back and be horrified by them because we have the luxury of being able to do so, a luxury that is (in part) derived from the knowledge those experiments give us. And yes, I think 100 years from now people WILL look back at us and be horrified about how do experiment on animals. But they'll be able to do so because they can afford that luxury. A luxury that's being built now, using those horrible methods. Morals are never free of context.