While most men will swear up and down that they will still love and find their wives attractive if they put on weight, the honesty of this comment holds true for very few men.
It depends on the individuals, but yeah. Also, aside from the whole "personal appeal" thing, over-weight folks are more or less viewed as "lower class." Weight issues, as they are called, imply lack of discipline, laziness and poor diet because of either lack of education or funds to purchase healthy foods.