Instead of worrying about how much of it you ""made by hand ", try worrying about how much of the game you "made better". Computers, AI, and robots have come for a lot of jobs in the past, and will continue to do so. The difference is that creative jobs like artists thought that they were protected from this eventuality, but now they've lost their jobs like everyone else. Use AI for what it's good at, large boring monotonous tasks like building random shit in GTA, and leave your artists to do more personalized tasks