From my point of view who cares what society says.I love ladies with curves & watching them enjoy a good meal is a pleasure because of knowing where all those calories will go...
It really depends on the individual, like everything else in life. There are those who consider it a preference and those that consider it a fetish, along with a verity of mixes in between.
Myself? I have a fetish for fat and weight gain, outside of that, I really don't prefer fatter women over thinner women, but they do tend to have more fat which is what turns me on in the first place.