I think the point about food and dietary restrictions is spot on. You can't just make cheeseburgers anymore. You now have to make something for the vegetarian,

I think the point about food and dietary restrictions is spot on. You can't just make cheeseburgers anymore. You now have to make something for the vegetarian, for the vegan, for the caveman. The effort required for per person customization turns the fun of throwing a party into the stress of running a restaurant.