Gavin Jackson

Answer: Think of any manufacturing process. Samples of new products are frequently created and then immediately destroyed. Also, the new replicant would require processing, training, etc. It was simpler for him to just dispose of the test.

Answer: He was being violently petulant at the moment, angry that he couldn't create and control the birth that he just learned occurred with older-model replicants and seeing his new creation as "flawed" by design. Pretty villainous, he cares nothing for the replicants.

Erik M.