Of course man is of more value than animals. Even the creator instructed us to use them for food, what evil is there in using them to proffer solutions to some of the medical challenges around?

And if humans were to be substituted for the task, who would give himself out for that kind of risk? Of course we know that if no one is willing, a point will reach where people would be taken against their will for such and its not going to be funny at all. So, please, let's continue using the animals, we love them but God loves them most🤣