Due to agriculture and changes in the way land is used and managed it is required that the populations of deer be kept in check. Its a problem that many areas have enormous trouble with. In america hunters were the first conservationists they fought long and hard to get land set aside for wildlife and for the protection of endangered species. They take the place of natural predators and sickness in population control. If we didnt control the population it would hit the carrying capacity of the land and they would die in mass numbers of malnutrition and plagues. Due to the urbanization and developement of the country introducing absent species to the chain to control the population is not an option. deer are not the only animals that need to be hunted for the sake of the good of the population rabbits, squirrels, opossums, racoons, ect. all are in need of a population check.
Andrew Yantzie/Mocular Associates in Environmental Studies/Wildlife Biology