Love of Cheese: Explained?

Ever wonder why you love cheese so much? I do. Or rather, I did, until I read this fairly fact-free article on what cheese contains:
In 1981, Eli Hazum and his colleagues at Wellcome Research Laboratories reported traces of the chemical morphine, a highly addictive opiate. It turns out that morphine is found in cow milk and human, purportedly to ensure offspring will bond very strongly with their mothers and get all the nutrients they need to grow.
The article goes on to try and draw a link between morphine and morphine precursors in cheese and the rates of obesity. If there were any actual numbers in the article describing how much morphine is in cheese, or why the rates of cheese consumption don't seem to correlate at all with obesity rates then it would be much more interesting. I'm going to stop complaining now.