Seeing the usage of animals has something unethical feels like hypocrisy because no one would allow a doctor who is not a professional to perform any surgery on them but then for a doctor to be considered a professional he or she must have carried out a lot of practice on animals to perfect their skills. It is like wanting perfection without sacrifice.
I secretly believe that whoever thinks that using animals for this is wrong wants to feel morally superior at all costs. 😵