The sad part is that wolves kill and eat the diseased deer for the most part allowing humans to get the health ones (diseased deer = slower). I remember a study done on caribou when the wolf population was devastated in Canada where the caribou started getting more diseases and dying themselves.
In a lot of places, it's illegal to even lure deer with a salt lick.
And deer are common and breed like bunnies. And carry nasty diseases.