There are certain otherwise extinct species that only still exist because of zoos, for profit zoos should not exist for sure but just as many are dedicated to conservation and the rate of species decline is going up daily. Zoos that focus on conservation have been responsible for re-introuding a few species back to the wild and I for one would like to see that continue. We only have Califonia Condors today because of the conservation efforts of the San Diego zoo for example.
https://exploringanimals.com/animal-species-that-only-exist-in-captivity/