I don't even think these jobs are fullfilling. Do you really feel fulfilled by needing to work? Not really. Monkey brain doesn't work like that. You feel the need to survive, yes, but once shelter and food is acquired there is no biological drive to get you to be motivated to stock the shelves at Target. The only thing keeping people in those jobs today is the threat of abject poverty, and perhaps a lack of knowledge or opportunity to do something better to pay for food and shelter. Tellingly, no one who is independently wealthy is finding fulfillment stocking shelves at Target. You have to do that in this society as its more or less illegal to hunt and gather and homestead freely, thanks to property rights being distributed to every square inch of land on earth, and most current world governments have vilified the concept of an altruistic government and society, since that means the elites would have to cede material wealth and power.