In Potions, you have undoubtedly used various parts of animals. These parts include eyes, fangs, blood, and so on. How are these materials supplied? Are the animals raised for Potion making treated badly? My guess is yes. Potion ingredients that come from animals should be gathered responsibly and painlessly for the animal in question. The materials should be taken at the end of their life time, so that they can live a full life. I say to stop using animal parts in Potions unless you know that the animals that the parts came from were treated nicely.