Fetish or preference?
The difference between a preference and a fetish is not always a clear thing.
Sometimes the difference is drawn at the point of wether it is an absolute requirement. If that's the case, it would be a fetish, otherwise a preference. Other times, the defintion depends on the precise activities it includes.
The most widely held belief within the feedism community seems to be that attraction to fat bodies is not a fetish, but feedism is a fetish. There are also people who think that neither feedism is a fetish, but that it is a lifestyle.