"With the greatest respect, no we are not Stu. We gave up on being "hunter/gatherers" thousands, if not hundreds of thousands of years ago. We feed ourselves and have done since that time by farming and fishing..."

If you really wanted to accord the greatest respect to Stu you would have tried a damn sight harder to get your facts right. The last glaciation ended a mere ten thousand or so years ago. Before that, hunting, gathering and scavenging were the only means of subsistence for all species of Homo, including Homo sapiens. For several millennia after the end of the last Ice Age, humans still relied entirely on hunter-gathering, only beginning the gradual transition, in many but not all cultures, to settled agriculture and animal husbandry in the last few thousand years. Your "hundreds of thousands" is plain nonsense.