I think if it was only about the clothes you could put on an article of woman's clothing say a dress and you would be happy. For some that might be all that want, but for me its more about temporarily having a female persona. I like to think that being a CD makes me more in touch with woman, but who knows? There are probably a myriad of reasons one would dress, but I know I've given up trying to figure out why or even more caring why, just that I like it and want to do it occasionally.
Woman's clothing has a significant amount of variation and style that is just not present in men's clothing. It is completely evocative of the feminine mystique when paired up with the undergarments, the hair, shoes and other accessories. Its the whole experience i need.
