Fat A Pet Peeve

I have been thinking lately as to why some peanut butter companies take the fat out of peanut butter in order to either make it healthier or to sell it. I am confused by this because peanut butter is really high in good fat. If it is good fat then why are they taking it out? By taking the fat out of peanut butter, they are making it unhealthy. Can anyone explain this to me?
A person should be eating no trans fat, a little (10%) saturated and about 30 % of the diet should be unsaturated.
I think I am going to go eat a spoon full of regular, full fat, no sugar added peanut butter. Seriously, it is healthy. It has protein, carbs, good fat and fiber all in one.