Theres a difference between culling and getting dressed up in Cammo gear and shooting an animal from behind a tree for fun and then hanging it's head on the wall .
I do not have any wall hangers. My uncle does, and I have friends who do. Just not my cup of tea. However, for that mount on the wall, there was a freezer full of meat in each case. Very little meat was lost because the wanted to mount the head; all the mounts I have seen have the hide and horns put on a wooden or plastic "skull". No meat is wasted in order to do those mounts.
FWIW, I have done most of my hunting in Wyoming; it is the law there that you must wear blaze orange when in the field. I wear it here in California too(although not for waterfowl).
It is very unfortunate that there are a few trophy hunters out that do not use the meat. Unfortunately, a very very small minority are the ones that get the attention, and give the rest of us hunters a bad name.
It should also be noted, at least in the US, that hunters put out a LOT of money and time to conserve nature. I duck hunt; Ducks Unlimited and other waterfowl associations have bought up or leased large amounts of land for habitat, that other wise would have been plowed under, whether for crops, or houses; land that is critical mating and hatching area's. Without that conservation, ducks would decline drastically, even without hunting. I have taken my tractor to a number of field conservation work days, donating my time to conserve and imrove habitat.
That's why I got a 100 round box of target shotshells for $22 at Walmart. Some of the money from tax on ammo goes towards land conservation. My duck tag goes towards habitat restoration.