Why focusing so early on a human target? Animals and plants physiology is still capable of doing things we're not nearly capable of reproducing in laboratory.

Why focusing so early on a human target? Animals and plants physiology is still capable of doing things we're not nearly capable of reproducing in laboratory. Plants and insects production are still used in pharmacology so it seems to me there would be a huge commercial potential for plant and animal organisms made from scratch, just as there is currently for organisms just barely modified. The human case will always be made difficult by ethicists and other party poopers, anyway.