Poachers are similarly mind boggling. Instead of leaving a viable population to harvest more animal parts ... they hunt down every last animal then move on to other animals.
Poaching makes sense to the poacher.
Take a guy I might or might not be related to. When he was growing up his family was dirt-poor and rural. Taking game out of season meant the difference between eating and starvation.
Hard on the deer, if you have a lot of people like that, granted. But laws and conservation and 'think about next year' don't mean much when your family needs to eat today.