Abolishing all animal use tomorrow is politically impossible. When rights groups refuse to support any welfare improvement (e.g., banning gestation crates for pigs), they risk achieving nothing. Furthermore, the rights position faces a thorny question: What about predator-prey relationships? If a lion has a right to life, a gazelle does not have a right to not be eaten. If a rat has a right to a laboratory, what about the parasite inside its gut? Nature is brutal. Rights philosophy often has to retreat from wild animals and focus on domesticated ones, which can seem arbitrary.
There are many ways to promote animal welfare and rights: Abolishing all animal use tomorrow is politically impossible