The size of the animal, the quantity of meat on the animal, the weight of the backpacks, the number of trips to get the animal out, and the physical burden involved are all factors that come into play, in my experience.
Alaskan moose may be the best example in North America. A mature bull will involve a minimum of 7 pack trips on a human's back. If the dead bull is remote and in tough country, one person will not be able to recover the animal before it's spoiled, or the hunter has died of exhaustion. It's too grueling - too physically demanding. Even when I was in my mid-20s.
The options are, don't shoot the moose, or shoot the bull relying on the prior knowledge that others will participate in recovery, and get some meat. When there's 350 pounds of boneless meat, enough to feed two large families for one year, who cares. Sometimes no one outside the hunting party will volunteer to hike in to recover the meat, even if they get to keep every pound they pack out, if the bull is difficult to retrieve. Shoot one in your back yard and it's altogether different. Finders keepers!
There aren't many legal bull moose killed along the road where I live anymore. So as with most things in life, there are different considerations for different circumstances, situations, activities, and... hunts.
It's common that moose hunting in Alaska involves a prior agreement that the meat is shared in some way. It allows for more successful hunting for all involved, and improved odds that some meat will end up in freezers of the hunting party.