I'm just wondering WHY some of these things don't exist, myself. You'd think that there would be some way to have an AI built based on generalizations (most are just "get value (xxxx:Food) up" and they would go to object "(xxxx:Fridge)" which would add to Food value but decrease Money value, or something.)

The really, really difficult part would be balancing things so that your AI doesn't die right away. Pathfinding would be a snap compared to balancing..