You want to know where medicine comes from? Where most of our understanding of neurological science comes from? How we understand the function of genes? How we understand diseases, tissue functions, chemical effects on the body, even our very psychology?
By studying duck penises. By studying what makes fruit flies drunk. By studying how flatworms choose their mates.
In-depth research of any organism, even any small part of an organism, is in all honesty priceless to scientific advancement. Every piece of the puzzle helps us better understand life as a whole and continues to further new studies and new breakthroughs indefinitely.
EVERY scientific experiment would sound like some sort of silly joke to an uneducated simpleton like you