I had a bearded Collie growing up and when it got groom we would get a grocery bag of fur, which a lady then came and picked up, so she could make sweaters of it, as the fur is water repellent.
People need to remember that mink is an invasive pest species, which gets killed like rats outside of captivity, so if people didn't breed them for their fur, they would be close to extinct.
I honestly couldn't give a fuck about aligators, minks etc. get breed in captivity for the use of their skin, but catching elephants, sharks, rhino etc. in the wild for their tusks/horns/fins and then just leave the rest, that's fucked up.