

Because men and women have different body shapes. A small man and woman may need the same size but certainly not the same cut.
E: nvm i skipped over you talking about body shapes. Yes I’d agree that there should be more options, but even an overweight man will likely need and want a different cut than a woman of similar proportions. So the distinction between genders still makes sense, just that each needs to accommodate more body types.
It doesn’t matter to me whether the man or woman has the job, what matters to me is that one working person could support a family, kids, owning a home, some vacations and still had enough money to save up and be generally not very concerned with finances.