I would take a humanely shot, drop-dead deer over a slaughtered cow anyday. I know that all hunters are not pros, and it takes time to learn. But real hunters want a clean kill. In terms of profit, this means less damage to the meat and the deer hide, which can either be sold to a furrier or self-tanned for a neat trophy. But a real woodsman/woodswoman feels a connection to nature and a deep respect for their quarry.. a fast kill is paramount.
I could go on about the benefits of hunting on deer populations. It thins the herd, as natural predators once did before we killed most of them off.