Predators are certainly part of it but I think that WT just like each other more. That, and no migrating which leaves one range (winter or summer) essentially vacant half the year. At least for mulies...

Does look like fun, though. They (GA) allow pig hunting at night and with bait. They do warn you, though, that while bait os legal for some species it is illegal for others. So, while you can spread corn for deer you have better not pop a turkey in that same place.