>Plenty of people (a billion a day?) enjoy fast food burgers.

Whoa there. "Enjoy" might be a bit generous. I might suggest endure. A lot of people eating fast food burgers are not doing it because they enjoy it, but at their cheap prices it is just something they can afford. Yes, there is a large portion of people that "like" fast food burgers, and that might be a number that reaches "plenty". But I would imagine that enjoyment is similar to when I was a broke ass college age person that could only afford ramen and enjoyed it as being better than nothing.