I was watching a television program that was talking about modified fats and proteins, etc.. They had mentioned that margarine is one molecule away from plastic. If you were to put margarine in the shade outside, and check it in two days, the chances are that you probably wouldn't even find a microbe on it. They said that margarine has... absolutely no nutritional value whatsoever.
My retort was:
I think John is teasing us. The "similar to plastic" and "no nutritional value" mentions are taken verbatim from one of those popular Emails that get forwarded around. Everyone knows that margarine is typically made from a combination of vegetable oils and animal fat. Just like butter, it's about 80% fat and 20% water. In some ways butter is better for your health and in some ways margarine is. Especially if you go for the types with healthier polyunsaturated fatty acids and no trans fat.
Actually I didn't think he was teasing us. Anyone that uses television in an appeal to authority is really stretching that form of logical fallacy. At least use a book or reference website, not an unnamed television show. At least the guy had the brains to not mention he'd read it on an anonymous forwarded Email.
There's a lot more to the butter versus margarine situation but I think most people decide either on taste or health issues. I actually like the taste of margarine better on bread or toast but when it comes to cooking, butter is the only one to use for me. The health side is a lot more complicated---but I don't worry about it. I don't eat enough of either to make a huge difference. (or so I tell myself)
Another woman posted some drivel about butter being better because plants are our friends. I guess she doesn't know enough about the survival strategies of plants. And I hope that she doesn't tell her kids to eat anything they see outside as long as it has roots in the ground. Plants are our friends. Jeeze.