There are an enormous number of animals, rodents included, that are used in scientific experiments. Most of us believe it would be unethical to conduct the same experiments on humans without their consent.
Of course, these animals are not humans, and our ethics don't exactly map to their lives. It may ethically justified to use their lives for many types of scientific experiments. I am sometimes in this camp. Especially for medical science purposes, where the results of the research can be used to enrich all lives, even non-human lives.
It's hard for me to ethically justify this. Maybe I'd change my mind if it could be shown to me that this had potential to lead to important medical knowledge for humans and non-humans alike.
Of course, these animals are not humans, and our ethics don't exactly map to their lives. It may ethically justified to use their lives for many types of scientific experiments. I am sometimes in this camp. Especially for medical science purposes, where the results of the research can be used to enrich all lives, even non-human lives.
It's hard for me to ethically justify this. Maybe I'd change my mind if it could be shown to me that this had potential to lead to important medical knowledge for humans and non-humans alike.