Growing up, we got margerine. It was cheap. I started eating butter in England--mostly because they don't serve much margerine. I keep both margerine and butter in the frig and use margerine for cooking and butter for eating. I am thinking I need to toss the margerine, period.
Yesterday at a meeting (I think it was the Park Board), someone mentioned they no longer eat margerine because it was basically a form of plastic. I of course, had to check out this claim. Well, it may not be plastic, but it's definitely not good for you. Here is an explanation of how margerine is made; it may make you ill just to read it.
I have my excuse to eat what I like better--butter.