It takes time - and time is money - to program things. MS is not going to spend the money to appeal to a relatively few when you consider the overall market. What's left of my generation is a not a force in the computer market place.
I like the aero concept; but I do not care for most of MS's aero themes. I am definitely am NOT looking for an XP look alike. I just prefer a more utilitarian and functional look. However, I realize that MS is not trying to appeal to my generation; nor should they be.