I think when it comes to porn, a lot of the time, beggars can't be choosers. Not every pretty woman wants to be in that industry. Not every ugly one does either, but you get my point. I think after you reach a certain maturity...as soon as boobs are not a new thing...the bigger the better idea dwindles and is replaced by not saggy screwy looking, natural is better. I've heard from a lot of men that as long as they look nice, it doesn't matter the size. To a certain point, boobs are boobs, they are all good. I think it's all personal preference as well. But I would be willing to bet the woman who get them worked on have the belief men like it more, not because the majority of men actually do.