Why should we bring back Wooly Mammoths?
SWEATERS!!!
The reason is the same answer as anything else: money.
The first city in the world that has a Wooly Mammoth is its zoo will make a fortune.
Why?
For the meat, of course!
I remember reading in Alexandr Solzhenitsyn’s Gulag Archipelago where the prisoners in a Siberian gulag unearthed perfectly preserved prehistoric fish and salamanders embedded in ice at the Kolyma River — and, in their hunger, roasted and ate them. No questions asked.