How is "It's acceptable because people perform a lesser form of the same behavior" an argument at all? Taken to its logical extreme, you could argue that you sh

How is "It's acceptable because people perform a lesser form of the same behavior" an argument at all? Taken to its logical extreme, you could argue that you shouldn't be prevented from punching children in the face because there are adults in the world who get punched in the face. Obviously, this is an insane take, but it applies the same logic you've outlined here.