As much as I love doing research, I feel great aversion doing it at the cost of countless animals being sacrificed. Being a passionate advocate of ethical and sustainable research practices, I am fascinated by the idea of using alternative in vitro platforms to reduce and ultimately replace animal testing methodologies. While I acknowledge the historical significance of animal testing and the complex physiological interactions that they provide, I firmly believe that the rapid advancements in the field of biomedical research and development of in vitro testing platforms such as microphysiological systems, organoids, 3D bioprinting offer a more humane and robust approach for toxicological assessments.