I know what your saying, but I think there are preferences that are not learned. Following your line of reasoning, a person is attracted to a particular gender because that is what they learned? I think there may be some environmental factors to attraction but a lot may come from birth. My point is that being more attracted to a certain size, race, eye colour, etc., does not necessarily mean one is sizeist, racist, etc. There are those who definitely may be, but not everyone is. I think it may be more of an issue if someone is only attracted to their own race, age, size, etc., to the exclusion of anyone else. Or if they will only associate with a specific 'type'. Attraction is far more complex.