Ha!!! I laughed at that one. Ahhhhh, Bazza. You sweet innocent child.
Just as well "researchers" get all their money from the magic money jar. Otherwise they would have to survive on grants and handouts. When is the last time you went to Woolies and bought a jar of "research". Hmmmm. Well, alrighty then. Yes, researchers are paid employees, or sub contractors at best.
Its simple. In moderation, butter is bitchin. It just tastes better. Fats, in unprocessed from, are essential to good health. Not necessary, essential. Same with protein/amino acids. Some amino acids are essential. Without them you get sick and can even die.
http://en.wikipedia.org/wiki/Kwashiorkor
If a food is processed, such as margarine, sooner or later it will show to be inferior or downright dangerous.
You got a limp dick Bazza? Maybe you need more saturated fat in your diet. Dats how the testosterone is made and transported. Get sum butta inta ya.