There's no rational reason to care about non-human lives at all. When we talk about pragmatic, secular ethics, we do so for the purpose of creating a stable and happy society. We know that by training other humans not to harm humans we reduce the likelihood that we will face hardship. There is no reason to include animals in this system other than that some people feel more sympathy for them. But animals can't engage in ethics with us, treating lab rats better will not make the rat species less likely to cause damage to us. Animal rights are a purely emotional impulse
> There's no rational reason to care about non-human lives at all
> Animal rights are a purely emotional impulse
That would be like saying you're going on holiday but there's no need to take account of the climate or weather.
Humans have emotions, therefore they are a consideration. To ignore emotions is not rational at all.
> We know that by training other humans not to harm humans we reduce the likelihood that we will face hardship. There is no reason to include animals in this system other than that some people feel more sympathy for them.
I, and many others throughout history would disagree with this assertion. As Tolstoy wrote: “As long as there are slaughter houses there will always be battlefields.” Psychopaths that hunt humans are well known for beginning on small animals and working their way up.
You may say that not all of society are psychopathic, but then we could ask if you would want to live somewhere where animal rights are strong, like the UK, or China, where they aren't even part of public consciousness.
If the powerful treat the less powerful badly, then I'd say it's naive to rely on their making the same arbitrary distinction between humans and other animals as you're relying on here.
